I found that the following works for both situations where my defun statement has or does not have the C: as part of the statement.

\);defun [[:print:]]*

Using the find phrase above, I can use the following replace phrase

\0 \n;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

to provide separators between multiple Autolisp functions in the same file.

\) ;defun [[:alnum:]]* works to select the phrases below

) ;defun CDIMSCALEMNU
) ;defun DRAWBEAM

but if I want to select

) ;defun C:DIMSCALEMNU

how would I need to modify my search request? (The colon seems to be a problem).

Thanks !!