I'm converting an SP level to an MP level but I've never done an MP level before. I noticed these calls in the specs:

SyncSector
SyncSurface
SyncThingAttachment
SyncThingPos

Can someone point me to the URL of a tutorial that deals with their required use or explain it

For example:
The level has elevators - do I need to call SyncThingPos() before/after sending the elevator to the next frame? Maybe like this?

arrived:
SyncThingPos(elevator)

Same question relating to doors. Is it like this?
SyncThingPos(door);
SyncSurface(door_adjoin);
SyncSector(door_adjoin);



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