Glossary:Branch

branch (in the contents window) - an element in the knowledge tree with all its descendants (incl. its children). All elements in a branch can be processed with subset operations. For example, if you would like to review your physics material before an exam, you could select the Physics branch in the contents window, and click Learn (Ctrl+L) at the bottom of the window. You can add new branches with Add and Insert in the contents window. The difference between a branch and a category is that a category is associated with templates, and other parameters. Only a few branches are made into categories.