I, too, am trying to figure this part out.
What is confusing is that in the 'shadow' folder there is a 'regime_flags' & a 'regime_symbols' folder.
In the 'shadowBIG' & 'shadowSMALL' folders, there is a 'regime_flags' folder, but...not 'regime_symbols' folders.
All have the same tile images, except for sizes.
There appears to be room for, at least, 30 symbols in the game screen; but usually only 27 (for example) show up, though I have seen 28 when adding a new symbol.
The way I have been able to use a new symbol (so far), is by replacing #30 tile (backed up) with my new #30 tile in the 'shadow/regime_symbols' folder.
Adding a #31 did not work for me.
I know I am missing a lot here, but this method did work.
Hopefully some others (Vic) can assist.
< Message edited by eddieballgame -- 6/20/2020 2:25:33 AM >