R help - Mar 2007 - Tracking when an object/function was modified (Mona Kanaan)

You might find this useful.

I have modified the R 'edit' function by adding

                           attr(x,"date.modified") <- 
substring(Sys.time(),1,19)

before the last line.

I then changed to ls() to sort functions, paste function name and time 
stamp from the contents of the "date.modified" attribute before
output.
Not particularly tidy but functional.
Only useful for functions that go through the editor.