Int 21 Fn E4  O - Novell Netware - Set File Attributes (fcb)               [N]

   AH = E4h
   CL = file attributes (see below)
   DX:DX -> FCB (see AH=0Fh)

Return: AL = error code

Note:  this function was added in NetWare 4.0, but was removed some time prior
     to Advanced NetWare 2.15, and is no longer listed in current Novell
     documentation

See Also: AX=4301h

Bitfields for file attributes:
 bit 0 read only
 bit 1 hidden
 bit 2 system
 bit 7 shareable