Tutorial:Modding Strings
From PMDOWiki
Strings in PMDO are stored in files specifically for them, with the .resx extension. Although strings may be literally defined in scripting files, they are best to be globally stored for the sake of enabling translations.
File location
Strings for the entire game are stored in the following two files:
strings.resx: Contains hardcoded text for the base gamestringsEx.resx: Contains text for developer-made content such as battle messages for move effects
Individual ground files have their own strings.resx file.
Modifying Strings
Strings may be edited using the game's dev mode. Any new string files in a mod will be added to the strings found originally in the game, for comparability's sake.
