After a bunch of work digging through the decompiled scripts of QFG1EGA, I was able to put together a few lists of variables, procedures, and event flags relating to the game. Some of the flags and variables are specific to QFG1VGA, and are noted as such.
9/30/2018 UPDATE: Thanks to Charles' work on the scripts
here, I now have more complete and accurate lists! Also, there is now an extensive list of procedures and global variables for QFG1VGA.