Glossary:Splitmark
splitmark - a boundary mark by which a large article will be split into smaller portions for faster loading and processing in SuperMemo. It can be a short text (e.g. ###SplitMark###), an HTML tag (e.g. HR (also called splitline), H1 through H6, DIV) or a Wiki headline. You can quickly insert a splitmark by choosing Reading : Split : Insert splitmark from the HTML component menu.