the actual list for simutrans 0.100.0
in game help files included in SimuTranslator (http://simutranslator.simutrans-germany.com)
12 files not used in all languages:
game_control.txt
use.txt
removal_tool.txt
window.txt
inspection_tool.txt
about.txt
bridges.txt
vehicle.txt
param.txt
mouse.txt
signals.txt
underground.txt
the file keys.txt is no longer necessary
keys.txt is automatically generated by Simutrans
link to <a href="keys.txt">keys</a > is working