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	<id>https://help18.whiz.me/index.php?action=history&amp;feed=atom&amp;title=Glossary%3ARoot_node</id>
	<title>Glossary:Root node - Revision history</title>
	<link rel="self" type="application/atom+xml" href="https://help18.whiz.me/index.php?action=history&amp;feed=atom&amp;title=Glossary%3ARoot_node"/>
	<link rel="alternate" type="text/html" href="https://help18.whiz.me/index.php?title=Glossary:Root_node&amp;action=history"/>
	<updated>2026-06-13T09:00:59Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
	<generator>MediaWiki 1.43.0</generator>
	<entry>
		<id>https://help18.whiz.me/index.php?title=Glossary:Root_node&amp;diff=9561&amp;oldid=prev</id>
		<title>SuperMemoHelp at 05:26, 26 June 2016</title>
		<link rel="alternate" type="text/html" href="https://help18.whiz.me/index.php?title=Glossary:Root_node&amp;diff=9561&amp;oldid=prev"/>
		<updated>2016-06-26T05:26:37Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 01:26, 26 June 2016&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Root_node&amp;quot;&amp;gt;root node&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Root_node&amp;quot;&amp;gt;root node&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Branch|branch]] in the [[Glossary:Contents_window|&#039;&#039;&#039;Contents&#039;&#039;&#039; window]] that keeps all [[Glossary:Element|elements]] of a given [[Glossary:Concept_group|concept group]]. For example, a [[Glossary:Node|node]] named &#039;&#039;Chemistry&#039;&#039; might be a &#039;&#039;&#039;root node&#039;&#039;&#039; of all [[Glossary:Element|elements]] related to chemistry. The &#039;&#039;&#039;root node&#039;&#039;&#039; determines how deep SuperMemo can interfere into the structure of the tree when working with a [[Glossary:Concept_group|concept group]]. All elements under the &#039;&#039;&#039;root&#039;&#039;&#039; are subject to restructuring. All elements above the &#039;&#039;&#039;root&#039;&#039;&#039; are protected from changes. The &#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Node|node]] that keeps the [[Glossary:Hook_node|hook]] that parents all newly added [[Glossary:Element|elements]] in the [[Glossary:Concept_group|concept group]]. The &#039;&#039;&#039;root&#039;&#039;&#039; of the whole [[Glossary:Collection|collection]] is the &#039;&#039;&#039;root&#039;&#039;&#039; of the [[Glossary:Knowledge_tree|knowledge tree]]. This master root has a physical position of 1 in the [[Glossary:Collection|collection]] (Element #1)&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Branch|branch]] in the [[Glossary:Contents_window|&#039;&#039;&#039;Contents&#039;&#039;&#039; window]] that keeps all [[Glossary:Element|elements]] of a given [[Glossary:Concept_group|concept group]]. For example, a [[Glossary:Node|node]] named &#039;&#039;Chemistry&#039;&#039; might be a &#039;&#039;&#039;root node&#039;&#039;&#039; of all [[Glossary:Element|elements]] related to chemistry.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;:&lt;/ins&gt;The &#039;&#039;&#039;root node&#039;&#039;&#039; determines how deep SuperMemo can interfere into the structure of the tree when working with a [[Glossary:Concept_group|concept group]]. All elements under the &#039;&#039;&#039;root&#039;&#039;&#039; are subject to restructuring. All elements above the &#039;&#039;&#039;root&#039;&#039;&#039; are protected from changes.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;:&lt;/ins&gt;The &#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Node|node]] that keeps the [[Glossary:Hook_node|hook]] that parents all newly added [[Glossary:Element|elements]] in the [[Glossary:Concept_group|concept group]].  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;:&lt;/ins&gt;The &#039;&#039;&#039;root&#039;&#039;&#039; of the whole [[Glossary:Collection|collection]] is the &#039;&#039;&#039;root&#039;&#039;&#039; of the [[Glossary:Knowledge_tree|knowledge tree]]. This master root has a physical position of 1 in the [[Glossary:Collection|collection]] (Element #1)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>SuperMemoHelp</name></author>
	</entry>
	<entry>
		<id>https://help18.whiz.me/index.php?title=Glossary:Root_node&amp;diff=9559&amp;oldid=prev</id>
		<title>SuperMemoHelp at 19:49, 25 June 2016</title>
		<link rel="alternate" type="text/html" href="https://help18.whiz.me/index.php?title=Glossary:Root_node&amp;diff=9559&amp;oldid=prev"/>
		<updated>2016-06-25T19:49:46Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 15:49, 25 June 2016&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Root_node&amp;quot;&amp;gt;root node&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Root_node&amp;quot;&amp;gt;root node&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Branch|branch]] in the [[Glossary:Contents_window|&#039;&#039;&#039;Contents&#039;&#039;&#039; window]] that keeps all [[Glossary:Element|elements]] of a given [[Glossary:Concept_group|concept group]]. For example, a [[Glossary:Node|node]] named &#039;&#039;Chemistry&#039;&#039; might be a &#039;&#039;&#039;root node&#039;&#039;&#039; of all [[Glossary:Element|elements]] related to chemistry.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Branch|branch]] in the [[Glossary:Contents_window|&#039;&#039;&#039;Contents&#039;&#039;&#039; window]] that keeps all [[Glossary:Element|elements]] of a given [[Glossary:Concept_group|concept group]]. For example, a [[Glossary:Node|node]] named &#039;&#039;Chemistry&#039;&#039; might be a &#039;&#039;&#039;root node&#039;&#039;&#039; of all [[Glossary:Element|elements]] related to chemistry. The &#039;&#039;&#039;root node&#039;&#039;&#039; determines how deep SuperMemo can interfere into the structure of the tree when working with a [[Glossary:Concept_group|concept group]]. All elements under the &#039;&#039;&#039;root&#039;&#039;&#039; are subject to restructuring. All elements above the &#039;&#039;&#039;root&#039;&#039;&#039; are protected from changes. The &#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Node|node]] that keeps the [[Glossary:Hook_node|hook]] that parents all newly added [[Glossary:Element|elements]] in the [[Glossary:Concept_group|concept group]]. The &#039;&#039;&#039;root&#039;&#039;&#039; of the whole [[Glossary:Collection|collection]] is the &#039;&#039;&#039;root&#039;&#039;&#039; of the [[Glossary:Knowledge_tree|knowledge tree]]. This master root has a physical position of 1 in the [[Glossary:Collection|collection]] (Element #1)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;:&lt;/del&gt;The &#039;&#039;&#039;root node&#039;&#039;&#039; determines how deep SuperMemo can interfere into the structure of the tree when working with a [[Glossary:Concept_group|concept group]]. All elements under the &#039;&#039;&#039;root&#039;&#039;&#039; are subject to restructuring. All elements above the &#039;&#039;&#039;root&#039;&#039;&#039; are protected from changes.&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;:&lt;/del&gt;The &#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Node|node]] that keeps the [[Glossary:Hook_node|hook]] that parents all newly added [[Glossary:Element|elements]] in the [[Glossary:Concept_group|concept group]].  &lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;:&lt;/del&gt;The &#039;&#039;&#039;root&#039;&#039;&#039; of the whole [[Glossary:Collection|collection]] is the &#039;&#039;&#039;root&#039;&#039;&#039; of the [[Glossary:Knowledge_tree|knowledge tree]]. This master root has a physical position of 1 in the [[Glossary:Collection|collection]] (Element #1)&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>SuperMemoHelp</name></author>
	</entry>
	<entry>
		<id>https://help18.whiz.me/index.php?title=Glossary:Root_node&amp;diff=9558&amp;oldid=prev</id>
		<title>SuperMemoHelp at 12:49, 25 June 2016</title>
		<link rel="alternate" type="text/html" href="https://help18.whiz.me/index.php?title=Glossary:Root_node&amp;diff=9558&amp;oldid=prev"/>
		<updated>2016-06-25T12:49:28Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 08:49, 25 June 2016&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Root_node&amp;quot;&amp;gt;root node&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Root_node&amp;quot;&amp;gt;root node&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; is a [[Glossary:Branch|branch]] in the [[Glossary:Contents_window|&amp;#039;&amp;#039;&amp;#039;Contents&amp;#039;&amp;#039;&amp;#039; window]] that keeps all [[Glossary:Element|elements]] of a given [[Glossary:Concept_group|concept group]]. For example, a [[Glossary:Node|node]] named &amp;#039;&amp;#039;Chemistry&amp;#039;&amp;#039; might be a &amp;#039;&amp;#039;&amp;#039;root node&amp;#039;&amp;#039;&amp;#039; of all [[Glossary:Element|elements]] related to chemistry.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; is a [[Glossary:Branch|branch]] in the [[Glossary:Contents_window|&amp;#039;&amp;#039;&amp;#039;Contents&amp;#039;&amp;#039;&amp;#039; window]] that keeps all [[Glossary:Element|elements]] of a given [[Glossary:Concept_group|concept group]]. For example, a [[Glossary:Node|node]] named &amp;#039;&amp;#039;Chemistry&amp;#039;&amp;#039; might be a &amp;#039;&amp;#039;&amp;#039;root node&amp;#039;&amp;#039;&amp;#039; of all [[Glossary:Element|elements]] related to chemistry.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root node&amp;#039;&amp;#039;&amp;#039; determines how deep SuperMemo can interfere into the structure of the tree when working with a [[Glossary:Concept_group|concept group]]. All elements under the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; are subject to restructuring. All elements above the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; are protected from changes.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root node&amp;#039;&amp;#039;&amp;#039; determines how deep SuperMemo can interfere into the structure of the tree when working with a [[Glossary:Concept_group|concept group]]. All elements under the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; are subject to restructuring. All elements above the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; are protected from changes.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; is a [[Glossary:Node|node]] that keeps the [[Glossary:Hook_node|hook]] that parents all newly added [[Glossary:Element|elements]] in the [[Glossary:Concept_group|concept group]].  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; is a [[Glossary:Node|node]] that keeps the [[Glossary:Hook_node|hook]] that parents all newly added [[Glossary:Element|elements]] in the [[Glossary:Concept_group|concept group]].  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; of the whole [[Glossary:Collection|collection]] is the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; of the [[Glossary:Knowledge_tree|knowledge tree]]. This master root has a physical position of 1 in the [[Glossary:Collection|collection]] (Element #1)&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; of the whole [[Glossary:Collection|collection]] is the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; of the [[Glossary:Knowledge_tree|knowledge tree]]. This master root has a physical position of 1 in the [[Glossary:Collection|collection]] (Element #1)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>SuperMemoHelp</name></author>
	</entry>
	<entry>
		<id>https://help18.whiz.me/index.php?title=Glossary:Root_node&amp;diff=9557&amp;oldid=prev</id>
		<title>SuperMemoHelp at 12:45, 25 June 2016</title>
		<link rel="alternate" type="text/html" href="https://help18.whiz.me/index.php?title=Glossary:Root_node&amp;diff=9557&amp;oldid=prev"/>
		<updated>2016-06-25T12:45:09Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 08:45, 25 June 2016&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Root_node&amp;quot;&amp;gt;root node&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Root_node&amp;quot;&amp;gt;root node&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; is a [[Glossary:Branch|branch]] in the [[Glossary:Contents_window|&amp;#039;&amp;#039;&amp;#039;Contents&amp;#039;&amp;#039;&amp;#039; window]] that keeps all [[Glossary:Element|elements]] of a given [[Glossary:Concept_group|concept group]]. For example, a [[Glossary:Node|node]] named &amp;#039;&amp;#039;Chemistry&amp;#039;&amp;#039; might be a &amp;#039;&amp;#039;&amp;#039;root node&amp;#039;&amp;#039;&amp;#039; of all [[Glossary:Element|elements]] related to chemistry.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; is a [[Glossary:Branch|branch]] in the [[Glossary:Contents_window|&amp;#039;&amp;#039;&amp;#039;Contents&amp;#039;&amp;#039;&amp;#039; window]] that keeps all [[Glossary:Element|elements]] of a given [[Glossary:Concept_group|concept group]]. For example, a [[Glossary:Node|node]] named &amp;#039;&amp;#039;Chemistry&amp;#039;&amp;#039; might be a &amp;#039;&amp;#039;&amp;#039;root node&amp;#039;&amp;#039;&amp;#039; of all [[Glossary:Element|elements]] related to chemistry.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root node&amp;#039;&amp;#039;&amp;#039; determines how deep SuperMemo can interfere into the structure of the tree when working with a [[Glossary:Concept_group|concept group]]. All elements under the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; are subject to restructuring. All elements above the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; are protected from changes.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root node&amp;#039;&amp;#039;&amp;#039; determines how deep SuperMemo can interfere into the structure of the tree when working with a [[Glossary:Concept_group|concept group]]. All elements under the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; are subject to restructuring. All elements above the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; are protected from changes.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; is a [[Glossary:Node|node]] that keeps the [[Glossary:Hook_node|hook]] that parents all newly added [[Glossary:Element|elements]] in the [[Glossary:Concept_group|concept group]].  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; is a [[Glossary:Node|node]] that keeps the [[Glossary:Hook_node|hook]] that parents all newly added [[Glossary:Element|elements]] in the [[Glossary:Concept_group|concept group]].  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; of the whole [[Glossary:Collection|collection]] is the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; of the [[Glossary:Knowledge_tree|knowledge tree]]. This master root has a physical position of 1 in the [[Glossary:Collection|collection]] (Element #1)&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; of the whole [[Glossary:Collection|collection]] is the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; of the [[Glossary:Knowledge_tree|knowledge tree]]. This master root has a physical position of 1 in the [[Glossary:Collection|collection]] (Element #1)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>SuperMemoHelp</name></author>
	</entry>
	<entry>
		<id>https://help18.whiz.me/index.php?title=Glossary:Root_node&amp;diff=9556&amp;oldid=prev</id>
		<title>SuperMemoHelp at 12:33, 25 June 2016</title>
		<link rel="alternate" type="text/html" href="https://help18.whiz.me/index.php?title=Glossary:Root_node&amp;diff=9556&amp;oldid=prev"/>
		<updated>2016-06-25T12:33:05Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 08:33, 25 June 2016&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Root_node&amp;quot;&amp;gt;root node&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Root_node&amp;quot;&amp;gt;root node&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Branch|branch]] in the [[Glossary:Contents_window|&#039;&#039;&#039;Contents&#039;&#039;&#039; window]] that keeps all [[Glossary:Element|elements]] of a given [[Glossary:Concept_group|concept group]]. For example, a [[Glossary:Node|node]] named &#039;&#039;Chemistry&#039;&#039; might be a &#039;&#039;&#039;root node&#039;&#039;&#039; of all [[Glossary:Element|elements]] related to chemistry.  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Branch|branch]] in the [[Glossary:Contents_window|&#039;&#039;&#039;Contents&#039;&#039;&#039; window]] that keeps all [[Glossary:Element|elements]] of a given [[Glossary:Concept_group|concept group]]. For example, a [[Glossary:Node|node]] named &#039;&#039;Chemistry&#039;&#039; might be a &#039;&#039;&#039;root node&#039;&#039;&#039; of all [[Glossary:Element|elements]] related to chemistry.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt; &lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root node&amp;#039;&amp;#039;&amp;#039; determines how deep SuperMemo can interfere into the structure of the tree when working with a [[Glossary:Concept_group|concept group]]. All elements under the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; are subject to restructuring. All elements above the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; are protected from changes.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root node&amp;#039;&amp;#039;&amp;#039; determines how deep SuperMemo can interfere into the structure of the tree when working with a [[Glossary:Concept_group|concept group]]. All elements under the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; are subject to restructuring. All elements above the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; are protected from changes.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; is a [[Glossary:Node|node]] that keeps the [[Glossary:Hook_node|hook]] that parents all newly added [[Glossary:Element|elements]] in the [[Glossary:Concept_group|concept group]].  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; is a [[Glossary:Node|node]] that keeps the [[Glossary:Hook_node|hook]] that parents all newly added [[Glossary:Element|elements]] in the [[Glossary:Concept_group|concept group]].  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; of the whole [[Glossary:Collection|collection]] is the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; of the [[Glossary:Knowledge_tree|knowledge tree]]. This master root has a physical position of 1 in the [[Glossary:Collection|collection]] (Element #1)&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; of the whole [[Glossary:Collection|collection]] is the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; of the [[Glossary:Knowledge_tree|knowledge tree]]. This master root has a physical position of 1 in the [[Glossary:Collection|collection]] (Element #1)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>SuperMemoHelp</name></author>
	</entry>
	<entry>
		<id>https://help18.whiz.me/index.php?title=Glossary:Root_node&amp;diff=9453&amp;oldid=prev</id>
		<title>SuperMemoHelp at 22:07, 16 June 2016</title>
		<link rel="alternate" type="text/html" href="https://help18.whiz.me/index.php?title=Glossary:Root_node&amp;diff=9453&amp;oldid=prev"/>
		<updated>2016-06-16T22:07:08Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 18:07, 16 June 2016&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Root_node&amp;quot;&amp;gt;root node&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Root_node&amp;quot;&amp;gt;root node&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Branch|branch]] in the [[Glossary:Contents_window|&#039;&#039;&#039;Contents&#039;&#039;&#039; window]] that keeps all [[Glossary:Element|elements]] of a given [[Glossary:Concept_group|concept group]]&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;. The &#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Node|node]] that keeps the [[Glossary:Hook_node|hook]] to which all [[Glossary:Element|elements]] belonging to a given [[Glossary:Concept_group|concept group]] are added&lt;/del&gt;. For example, a [[Glossary:Node|node]] named &#039;&#039;Chemistry&#039;&#039; might be a &#039;&#039;&#039;root node&#039;&#039;&#039; of all [[Glossary:Element|elements]] related to chemistry.  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Branch|branch]] in the [[Glossary:Contents_window|&#039;&#039;&#039;Contents&#039;&#039;&#039; window]] that keeps all [[Glossary:Element|elements]] of a given [[Glossary:Concept_group|concept group]]. For example, a [[Glossary:Node|node]] named &#039;&#039;Chemistry&#039;&#039; might be a &#039;&#039;&#039;root node&#039;&#039;&#039; of all [[Glossary:Element|elements]] related to chemistry.  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root node&amp;#039;&amp;#039;&amp;#039; determines how deep SuperMemo can interfere into the structure of the tree when working with a [[Glossary:Concept_group|concept group]]. All elements under the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; are subject to restructuring. All elements above the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; are protected from changes.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root node&amp;#039;&amp;#039;&amp;#039; determines how deep SuperMemo can interfere into the structure of the tree when working with a [[Glossary:Concept_group|concept group]]. All elements under the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; are subject to restructuring. All elements above the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; are protected from changes.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;:The &#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Node|node]] that keeps the [[Glossary:Hook_node|hook]] that parents all newly added [[Glossary:Element|elements]] in the [[Glossary:Concept_group|concept group]]. &lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; of the whole [[Glossary:Collection|collection]] is the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; of the [[Glossary:Knowledge_tree|knowledge tree]]. This master root has a physical position of 1 in the [[Glossary:Collection|collection]] (Element #1)&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:The &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; of the whole [[Glossary:Collection|collection]] is the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; of the [[Glossary:Knowledge_tree|knowledge tree]]. This master root has a physical position of 1 in the [[Glossary:Collection|collection]] (Element #1)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>SuperMemoHelp</name></author>
	</entry>
	<entry>
		<id>https://help18.whiz.me/index.php?title=Glossary:Root_node&amp;diff=9452&amp;oldid=prev</id>
		<title>SuperMemoHelp at 22:03, 16 June 2016</title>
		<link rel="alternate" type="text/html" href="https://help18.whiz.me/index.php?title=Glossary:Root_node&amp;diff=9452&amp;oldid=prev"/>
		<updated>2016-06-16T22:03:26Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 18:03, 16 June 2016&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l2&quot;&gt;Line 2:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 2:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; is a [[Glossary:Branch|branch]] in the [[Glossary:Contents_window|&amp;#039;&amp;#039;&amp;#039;Contents&amp;#039;&amp;#039;&amp;#039; window]] that keeps all [[Glossary:Element|elements]] of a given [[Glossary:Concept_group|concept group]]. The &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; is a [[Glossary:Node|node]] that keeps the [[Glossary:Hook_node|hook]] to which all [[Glossary:Element|elements]] belonging to a given [[Glossary:Concept_group|concept group]] are added. For example, a [[Glossary:Node|node]] named &amp;#039;&amp;#039;Chemistry&amp;#039;&amp;#039; might be a &amp;#039;&amp;#039;&amp;#039;root node&amp;#039;&amp;#039;&amp;#039; of all [[Glossary:Element|elements]] related to chemistry.  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; is a [[Glossary:Branch|branch]] in the [[Glossary:Contents_window|&amp;#039;&amp;#039;&amp;#039;Contents&amp;#039;&amp;#039;&amp;#039; window]] that keeps all [[Glossary:Element|elements]] of a given [[Glossary:Concept_group|concept group]]. The &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; is a [[Glossary:Node|node]] that keeps the [[Glossary:Hook_node|hook]] to which all [[Glossary:Element|elements]] belonging to a given [[Glossary:Concept_group|concept group]] are added. For example, a [[Glossary:Node|node]] named &amp;#039;&amp;#039;Chemistry&amp;#039;&amp;#039; might be a &amp;#039;&amp;#039;&amp;#039;root node&amp;#039;&amp;#039;&amp;#039; of all [[Glossary:Element|elements]] related to chemistry.  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &#039;&#039;&#039;root node&#039;&#039;&#039; determines how deep SuperMemo can interfere into the structure of the tree when working with a [[Glossary:Concept_group|concept group]]. All elements under the &#039;&#039;&#039;root&#039;&#039;&#039; are subject to restructuring. All elements above the &#039;&#039;&#039;root&#039;&#039;&#039; are protected from changes.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;:&lt;/ins&gt;The &#039;&#039;&#039;root node&#039;&#039;&#039; determines how deep SuperMemo can interfere into the structure of the tree when working with a [[Glossary:Concept_group|concept group]]. All elements under the &#039;&#039;&#039;root&#039;&#039;&#039; are subject to restructuring. All elements above the &#039;&#039;&#039;root&#039;&#039;&#039; are protected from changes.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &#039;&#039;&#039;root&#039;&#039;&#039; of the whole [[Glossary:Collection|collection]] is the &#039;&#039;&#039;root&#039;&#039;&#039; of the [[Glossary:Knowledge_tree|knowledge tree]]. This master root has a physical position of 1 in the [[Glossary:Collection|collection]] (Element #1)&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;:&lt;/ins&gt;The &#039;&#039;&#039;root&#039;&#039;&#039; of the whole [[Glossary:Collection|collection]] is the &#039;&#039;&#039;root&#039;&#039;&#039; of the [[Glossary:Knowledge_tree|knowledge tree]]. This master root has a physical position of 1 in the [[Glossary:Collection|collection]] (Element #1)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>SuperMemoHelp</name></author>
	</entry>
	<entry>
		<id>https://help18.whiz.me/index.php?title=Glossary:Root_node&amp;diff=9451&amp;oldid=prev</id>
		<title>SuperMemoHelp at 22:02, 16 June 2016</title>
		<link rel="alternate" type="text/html" href="https://help18.whiz.me/index.php?title=Glossary:Root_node&amp;diff=9451&amp;oldid=prev"/>
		<updated>2016-06-16T22:02:58Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 18:02, 16 June 2016&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Root_node&amp;quot;&amp;gt;root node&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Root_node&amp;quot;&amp;gt;root node&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Branch|branch]] in the [[Glossary:Contents_window|&#039;&#039;&#039;Contents&#039;&#039;&#039; window]] that keeps all [[Glossary:Element|elements]] of a given [[Glossary:Concept_group|concept group]]. The &#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Node|node]] that keeps the [[Glossary:Hook_node|hook]] to which all [[Glossary:Element|elements]] belonging to a given [[Glossary:Concept_group|concept group]] are added. For example, a [[Glossary:Node|node]] named &#039;&#039;Chemistry&#039;&#039; might be a &#039;&#039;&#039;root node&#039;&#039;&#039; of all [[Glossary:Element|elements]] related to chemistry. The &#039;&#039;&#039;root&#039;&#039;&#039; of the whole [[Glossary:Collection|collection]] is the &#039;&#039;&#039;root&#039;&#039;&#039; of the [[Glossary:Knowledge_tree|knowledge tree]]. This master root has a physical position of 1 in the [[Glossary:Collection|collection]] (Element #1)&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;. The &#039;&#039;&#039;root node&#039;&#039;&#039; determines how deep SuperMemo can interfere into the structure of the tree when working with a [[Glossary:Concept_group|concept group]]. All elements under the &#039;&#039;&#039;root&#039;&#039;&#039; are subject to restructuring. All elements above the &#039;&#039;&#039;root&#039;&#039;&#039; are protected from changes&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Branch|branch]] in the [[Glossary:Contents_window|&#039;&#039;&#039;Contents&#039;&#039;&#039; window]] that keeps all [[Glossary:Element|elements]] of a given [[Glossary:Concept_group|concept group]]. The &#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Node|node]] that keeps the [[Glossary:Hook_node|hook]] to which all [[Glossary:Element|elements]] belonging to a given [[Glossary:Concept_group|concept group]] are added. For example, a [[Glossary:Node|node]] named &#039;&#039;Chemistry&#039;&#039; might be a &#039;&#039;&#039;root node&#039;&#039;&#039; of all [[Glossary:Element|elements]] related to chemistry.  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt; &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;The &#039;&#039;&#039;root node&#039;&#039;&#039; determines how deep SuperMemo can interfere into the structure of the tree when working with a [[Glossary:Concept_group|concept group]]. All elements under the &#039;&#039;&#039;root&#039;&#039;&#039; are subject to restructuring. All elements above the &#039;&#039;&#039;root&#039;&#039;&#039; are protected from changes.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt; &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &#039;&#039;&#039;root&#039;&#039;&#039; of the whole [[Glossary:Collection|collection]] is the &#039;&#039;&#039;root&#039;&#039;&#039; of the [[Glossary:Knowledge_tree|knowledge tree]]. This master root has a physical position of 1 in the [[Glossary:Collection|collection]] (Element #1)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>SuperMemoHelp</name></author>
	</entry>
	<entry>
		<id>https://help18.whiz.me/index.php?title=Glossary:Root_node&amp;diff=9450&amp;oldid=prev</id>
		<title>SuperMemoHelp at 22:02, 16 June 2016</title>
		<link rel="alternate" type="text/html" href="https://help18.whiz.me/index.php?title=Glossary:Root_node&amp;diff=9450&amp;oldid=prev"/>
		<updated>2016-06-16T22:02:07Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 18:02, 16 June 2016&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Root_node&amp;quot;&amp;gt;root node&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&amp;quot;Root_node&amp;quot;&amp;gt;root node&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Branch|branch]] in the [[Glossary:Contents_window|&#039;&#039;&#039;Contents&#039;&#039;&#039; window]] that keeps all [[Glossary:Element|elements]] of a given [[Glossary:Concept_group|concept group]]. The &#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Node|node]] that keeps the [[Glossary:Hook_node|hook]] to which all [[Glossary:Element|elements]] belonging to a given [[Glossary:Concept_group|concept group]] are added. For example, a [[Glossary:Node|node]] named &#039;&#039;Chemistry&#039;&#039; might be a &#039;&#039;&#039;root node&#039;&#039;&#039; of all [[Glossary:Element|elements]] related to chemistry. The &#039;&#039;&#039;root&#039;&#039;&#039; of the whole [[Glossary:Collection|collection]] is the &#039;&#039;&#039;root&#039;&#039;&#039; of the [[Glossary:Knowledge_tree|knowledge tree]]. This master root has a physical position of 1 in the [[Glossary:Collection|collection]] (Element #1)&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Branch|branch]] in the [[Glossary:Contents_window|&#039;&#039;&#039;Contents&#039;&#039;&#039; window]] that keeps all [[Glossary:Element|elements]] of a given [[Glossary:Concept_group|concept group]]. The &#039;&#039;&#039;root&#039;&#039;&#039; is a [[Glossary:Node|node]] that keeps the [[Glossary:Hook_node|hook]] to which all [[Glossary:Element|elements]] belonging to a given [[Glossary:Concept_group|concept group]] are added. For example, a [[Glossary:Node|node]] named &#039;&#039;Chemistry&#039;&#039; might be a &#039;&#039;&#039;root node&#039;&#039;&#039; of all [[Glossary:Element|elements]] related to chemistry. The &#039;&#039;&#039;root&#039;&#039;&#039; of the whole [[Glossary:Collection|collection]] is the &#039;&#039;&#039;root&#039;&#039;&#039; of the [[Glossary:Knowledge_tree|knowledge tree]]. This master root has a physical position of 1 in the [[Glossary:Collection|collection]] (Element #1)&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;. The &#039;&#039;&#039;root node&#039;&#039;&#039; determines how deep SuperMemo can interfere into the structure of the tree when working with a [[Glossary:Concept_group|concept group]]. All elements under the &#039;&#039;&#039;root&#039;&#039;&#039; are subject to restructuring. All elements above the &#039;&#039;&#039;root&#039;&#039;&#039; are protected from changes&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>SuperMemoHelp</name></author>
	</entry>
	<entry>
		<id>https://help18.whiz.me/index.php?title=Glossary:Root_node&amp;diff=9298&amp;oldid=prev</id>
		<title>SuperMemoHelp at 08:42, 1 June 2016</title>
		<link rel="alternate" type="text/html" href="https://help18.whiz.me/index.php?title=Glossary:Root_node&amp;diff=9298&amp;oldid=prev"/>
		<updated>2016-06-01T08:42:02Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 04:42, 1 June 2016&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&quot;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;root_node&lt;/del&gt;&quot;&amp;gt;root node&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;;&amp;lt;span id=&quot;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Root_node&lt;/ins&gt;&quot;&amp;gt;root node&amp;lt;/span&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; is a [[Glossary:Branch|branch]] in the [[Glossary:Contents_window|&amp;#039;&amp;#039;&amp;#039;Contents&amp;#039;&amp;#039;&amp;#039; window]] that keeps all [[Glossary:Element|elements]] of a given [[Glossary:Concept_group|concept group]]. The &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; is a [[Glossary:Node|node]] that keeps the [[Glossary:Hook_node|hook]] to which all [[Glossary:Element|elements]] belonging to a given [[Glossary:Concept_group|concept group]] are added. For example, a [[Glossary:Node|node]] named &amp;#039;&amp;#039;Chemistry&amp;#039;&amp;#039; might be a &amp;#039;&amp;#039;&amp;#039;root node&amp;#039;&amp;#039;&amp;#039; of all [[Glossary:Element|elements]] related to chemistry. The &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; of the whole [[Glossary:Collection|collection]] is the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; of the [[Glossary:Knowledge_tree|knowledge tree]]. This master root has a physical position of 1 in the [[Glossary:Collection|collection]] (Element #1)&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:&amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; is a [[Glossary:Branch|branch]] in the [[Glossary:Contents_window|&amp;#039;&amp;#039;&amp;#039;Contents&amp;#039;&amp;#039;&amp;#039; window]] that keeps all [[Glossary:Element|elements]] of a given [[Glossary:Concept_group|concept group]]. The &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; is a [[Glossary:Node|node]] that keeps the [[Glossary:Hook_node|hook]] to which all [[Glossary:Element|elements]] belonging to a given [[Glossary:Concept_group|concept group]] are added. For example, a [[Glossary:Node|node]] named &amp;#039;&amp;#039;Chemistry&amp;#039;&amp;#039; might be a &amp;#039;&amp;#039;&amp;#039;root node&amp;#039;&amp;#039;&amp;#039; of all [[Glossary:Element|elements]] related to chemistry. The &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; of the whole [[Glossary:Collection|collection]] is the &amp;#039;&amp;#039;&amp;#039;root&amp;#039;&amp;#039;&amp;#039; of the [[Glossary:Knowledge_tree|knowledge tree]]. This master root has a physical position of 1 in the [[Glossary:Collection|collection]] (Element #1)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>SuperMemoHelp</name></author>
	</entry>
</feed>