Compiled HTML Help is also known as CHM help.
Compiled HTML Help is a popular help formats for software that runs on Windows.
Compiled HTML Help usually has a tri-pane that shows Contents, Index, and Search tabs. Usually, these tabs are on the left of the help window. Compiled HTML Help can have other tabs, such as a Glossary.
To help different types of user, browse sequences let people navigate easily through topics that are related to their problems. For example, in accounting software, the compiled HTML Help can contain a browse sequence for 'year-end procedures'.