Event flag names are dumped from the game data; I included some which looked interesting enough as a "starter kit" for event flags for LGPE.
BGM_SILENT would possibly mute the game background music, which can be useful for people wanting to play with sound effects and their own external music.
WAZA OMOIDASHI is Japanese for "Move Reminder" which is for the move relearner in indigo plateau, assumedly unlocking him (he'll unlock by the time you get there, I assume).
ZUKAN is Japanese for PokeDex.