TOBJ

TOBJ is a section in the item definition file. It is used to define timed map objects. Objects will be visible at during specific time. They can be made to appear to change from one object to another on a specific time of day.

GTA III - GTA San Andreas
All TOBJ objects needs a daytime and a nighttime object at a point to show up at all times. If one object doesn't have the correct timing or is missing entirely, the game will keep using the existing TOBJ object. You will not see a hole in the ground.

Format
ID, ModelName, TextureName, ObjectCount, DrawDist, [DrawDist2, ...], Flags, TimeOn, TimeOff All but the last two columns are the same as the OBJS section.

GTA IV
ModelName, TextureName, DrawDist, Flag1, Flag2, (Bounds min)X,Y,Z, (Bounds max)X,Y,Z, (Bounds Sphere)X,Y,Z, Radius, WDD, NightFlag

Note that GTA IV does not use any unique object ID numbers. All but the last column are the same as the OBJS section.