INT 21 U - PTS-DOS 6.51 & S/DOS 1.0 - ABORT CURRENT PROCESS VIA INT 23      
	AH = 92h
Desc:	This function is provided by Paragon Technology Systems S/DOS 1.0+
	  (and most probably also by PTS-DOS 6.51+, maybe even earlier).
	  It allows terminating programs via the CTRL+BREAK method.
Note:	It is currently unknown if this function is also supported by
	  PhysTechSoft PTS-DOS 6.60, 6.70, or 2000.
SeeAlso: INT 23,INT 24