I used to work on this product (and think Pascal, Think Reference and other cool stuff). Fun times and a lot of great developers.

When compiling, there was a modal dialog that would show the name of each file being compiled...they went by fast even on early macs. Michael Kahl sped it up even more by figuring out that QuickDraw’s DrawText routine was still slow enough to be impacting compile time. So a custom blitter was made to replace it and a fast compiler got even faster.