RBIL61 - INT 2F - PTS-DOS 6.51, S/DOS 1.0+ - SET SFT INCREMENT {undocumented}

INT 2F U - PTS-DOS 6.51, S/DOS 1.0+ - SET SFTsee System File Table INCREMENT
	AX = 1252h
	BX = new SFTsee System File Table increment
Return: ???
Note:	This function is known to be supported by Paragon Technology Systems
	  PTS-DOS 6.51 and S/DOS 1.0 and probably was also supported
	  in earlier releases.
SeeAlso: AX=1253h