[atlei]

Back in my Cobol/CICS days, every line that was edited was marked with a 3-character identifier for the person responsible. In a limited "ide" this made it possible to find the person responsible and at least ask him/her for more information/documentation.

I use a similar idea which is very low-tech, but use the date for each line/function that is changed, like this:

v110117 Statusbar.Text (string, in::statusbar_type_info);

v110117 is simply a macro where I explain the high-level rationale/bug/functionality (which is visible on mouseover-tooltip). If you need to edit different functions to fix a bug, it is a simple search for v110117 to find all changes (the comment at the end of the line may be marked v110117a, v110117b etc to separate different issues, and the detailed explanation for the changes done in that line/function is explained there).

You will quickly see if there has been any changes in a function lately due to the date-format (vYYMMDD). A bonus is that if a function has many different changes it is immediately visible, and should be a warning that the function is complex/high maintenance.