Pure Sanny Builder 3 has no classes in GTA III edit mode. Here's what will fix this flaw... Classes make coding much easier in SB, but they are not provided for GTA III.
And the whole list of additions is below. Keywords - key_down(0AB0) - cheat(0ADC)
Classes,that were in GTA SA - Actor - Camera - Machine - File - Garage - Marker - Model - Object - Pickup - Player
Classes,which were not in SB at all - Sphere - Text field