(Disclaimer: this is an Excel sheet which needs macros enabled to function properly. I did not create this. Download and use at your own risk.)
This is a script I created long ago to convert perl code into html to make it more manageable to view. You can see an example of it in action here (an htmlized version of the script itself) and here (converted CGI.pm -- a very useful and large perl module -- to better illustrate its use).