Start VSdocman Comment Editor, uncheck WYSIWYG button and select Misc tab.

This dialog allows to edit miscellaneous fields of member's documentation.
Author
Corresponds to <author> tag.
Version
Corresponds to <version> tag.
Revision
Corresponds to <revision> tag.
Include source code
Corresponds to <includesource> tag.
Compile only when the following constant is defined...
Corresponds to <compilewhen> tag. Leave blank if this member should be always compiled. If you enter a constant name here, the member will be only compiled when constant specified in this field is also listed in Code Members-Conditional Compilation options.