HI Bob,
Its an idea, if you want to call the same function (eg. CountComments) to more than one files.
1. open an excel
2. Record a macro.
3. select personal macro workbook from the list, give ok
4. then press alt F11, in your personal macro workbook, just type your code there. save it.
5. then try =PERSONAL.XLSB!CountComments(A2:C2)
The advantage is you dont have to keep typing the same code in every different excel file.
Please let me know if you have any doubts.
Thanks
Ren