You can add a brief description of your UDF by going to ToolsMacroMacros.

Type in the name of your UDF and "Options". Add a description and hit OK then
Cancel.

To actually add the arguments you will need something more complex.

To fully customize your User Defined Functions....

See Laurent Longre's website for FUNCUSTOMIZE add-in.

ZIP file also includes a demo file and a how-to-use file.

http://longre.free.fr/english/index.html

UNFORTUNATELY................Ballon/Screen Tips are not available with Laurent's
method.


Gord Dibben Excel MVP


On Wed, 17 Oct 2007 21:33:58 -0700, Jonas wrote:

Does anybody know if it is possible to add descriptions of arguements
for user-defined functions? I am referring to the window that appears
when you choose a user-defined function; the "Function Arguments"
window.

I was able to add a description of the function but I haven't figured
out how to add a description for the arguements.