These functions are assumed to be globally available to all scripts since they aren't defined in the patch lua files.
This list is incomplete; additional functions could exist in the exe but not be used in the game lua, and some lua files may always be loaded (system_lib.lua?) making their functions essentially global.
These functions are defined within the patch lua files. They are assumed to be only available within the file that defines them or by including the file in another script.
Some of these functions may essentially be global since their files are always loaded; which files (and which functions) haven't been determined yet.