Q:

Are the letters shown in the Dwarf Fortress loading screen random?

When you load up something in DF, there is a point where a bunch of colored letters are shown. I was wondering if each individual letter actually means something, or is it just random space filler until it reaches 100%.
Screenshot – click the image below to view the original, full-sized image:

A:

They are quite meaningful:
Each letter represents a loaded monster, and the letter used is the monster in question.

