How do I create a .hlp or .chm file for Visio?

[Elonna]

According to Visio's help, you can create a custom help (.hlp or .chm) file
that can then be used for Double-click Behavior. Does anyone know how to
create a custom help file?

 

[David Parker]

Here is one suggestion:
http://www.west-wind.com/wwstore/ItemList_Abstract.aspx?Category=Help Tools

 

[Andy]

I have found this to be a very good help generation tool, will
generate chm, pdf, html and more.

http://www.helpandmanual.com/