GRGE

GRGE is one of the plain-text IPL sections, introduced with San Andreas. It replaces the previously used opcodes 0219, 03BB and 057A. It creates an invisible cube which interacts as a garage. Each garage can be used differently, for example by the script.

San Andreas Format
The format itself is easy, but understanding it seems hard. However the position values are pretty flexible and you can describe one garage in multiple ways.

PosX, PosY, PosZ, LineX, LineY, CubeX, CubeY, CubeZ, DoorType, GarageType, Name

Types of doors
The garage door only opens if the IDE flag value of the door is 2048 and the door is defined in the  file.