Hosting and domain costs until October 2024 have been generously sponsored by dumptruck_ds. Thank you!
List of builtin functions
From Quake Wiki
QuakeC uses builtin functions to call bits of C code that can do 'jobs' for the QC that otherwise can't be done. Some functions affect the game world, some modify variables, and some maintain file lists for the engine. Each of the original functions are detailed below. Please note that builtin parameters/types/etc might differ between Quake and Hexen II.