>I have been given a very large DOS application, at worse I will probably end up babysitting it. At best I will get to replace it, either way I need to understand what it does and how it works, anybody got any hints to the best way of going about this? Any utilities that might help?

Dunno if it was in FPD or FPW, but there used to be foxdoc. With a litle ingenuity you can also buld a small fll/plb giving you analogous output to the coverage profiler - Perhaps this can be also set just via the watch window, don't remember.

But just running the application in the debugger should give you a better picture: the function stack hides in the menu of the trace window, but you can jump through the code in different levels. Coupled with some logging hook code my choice method to familiarize with the old stuff.

HTH

thomas