The Framework optionally provides F1=Help support to your web browser applications.
It does this by trapping F1=Help requests made by the user and then invoking a WEBEVENT function named UFU0002 in process UF_SYSWB.
Alternatively, the shipped UF_SY002 offers a basic example of how to use a WAM to display application help. Refer to the Web Details tab in Framework Properties:

Developers may modify the default behavior by creating their own version of UF_SY002 (with a different name) and cause it to display a CHM document or even a specific section of a CHM document.