It may contain Pascal instructions, functions and procedures, GLIDER common instructions and procedures, GLIDER functions, the GLIDER instructions ASSEMBLE, COPYMESS, CREATE, DEASSEMBLE, SYNCHRONIZE, SENDTO, STATE and the procedures STOPSCAN and BEGINSCAN. If there is a STATE instruction (only one is allowed), it must be the first in the code. Its associated instruction may contain Pascal instructions, functions and procedures, GLIDER common instructions and procedures, and GLIDER functions. It cannot have SENDTO instructions.