There is a number of log files that can be generated you might find interesting.

Pressing 'DEL'-key while being in game will give you the ammount of memory used currently by the GUI and all graphics loaded. It also creates 2 log files. One with all missing systemgraphics and one with a list of all graphics actually loaded.

In settings tab you can click on “Export Text Logfiles” to export a dozen or so interesting text files for a modder. Including lists text messages in events and action card picture use. Very usefull for debugging.