And I think I remembered reading somewhere that @ compile time, the func_group is ignored. But I found back an old word doc from Paul Jacquay about Terrain Construction for Quake 3 Engine Games, the doc was converted to html by astrocreep, it can be found here. I think that document was created from Team Arena and it looks like the func_group was created from there with the following def :func_group
Map Entity Color: Light blue
Dimensions: Determined by dimensions of map components.
Game Function: This is not an entity. It is strictly an editor utility to group world brushes and patches together for convenience (selecting, moving, copying, etc). You cannot group entities with this.
@ this place in the doc the func_group is an entity with keys and values for it, it's being used for terrain information.· A variant of the func_group entity has been added to the game. When a func_group of brushes (only) is given a terrain key and a numerical value (an ID number for that terrain) and several other key attributes, it becomes a terrain entity and is treated differently than other brushes during the compile.
Are the 2 definition true? I mean can I work with a simple group of brushes if I don't give the group any keys/values?