INT 21 U - DR-DOS 5.0 - HISTORY BUFFER, SHARE, AND HILOAD CONTROL
AH = 44h
AL = 16h to 18h
Note:   these subfunctions are identical to AX=4456h to 4458h
SeeAlso: AX=4457h,AX=4458h

See also: 214456

2144 - DR-DOS 5.0 - HISTORY BUFFER, SHARE, AND HILOAD CONTROL