IFDEF s
  DISPLAY "XLIB04 Small Model"
  .model small
ELSE
  IFDEF c
    DISPLAY "XLIB04 Compact Model"
    .model compact
  ELSE
     IFDEF l
       DISPLAY "XLIB04 Large Model"
      .model large
     ELSE
       DISPLAY "WARNING: Model was not defined at the command line."
       DISPLAY "         Using default small model ie /ds         "
       DISPLAY "         Include in TASM commandline either /ds, /dc or /dl"
       .model small
     ENDIF
  ENDIF
ENDIF