SubpTool utilizes a dictionary of filenames called subp_dictionary.txt. As it decompiles the subp, it compares the hashes generated from this dictionary to any hashed keys it finds. If it finds a match, it will output the string by it’s real name with the XML attribute ‘SubtitleId’. If it cannot find a match, it will output the string by its hash with the XML attribute ‘Id’.
The most current dictionary can be found here: https://github.com/TinManTex/mgsv-lookup-strings