This is an old version from the tos.hyp. The new is on GitHub!

11.2 MAGX_COOKIE, status_bits

A bit-vector, which is defined as follows:

Bit-00	=	MagiC task-manager active at present?
Bit-01	=	Reserved
..
Bit-31	=	Reserved

Warning: The specified bits in this LONG value are read-only, i.e. the may not be changed.