<parm> = (<name> or <num>) +/- <num>
<num>  = <int> or $ <hexnum>
<name> = <varname> or <procname> : <varname>

Display commands:
D? <parm> where ? is as follows
I - INTEGER   C - CHAR      L - BOOLEAN   R - REAL
B - BYTE      W - WORD      S - STRING    X - EXTENDED
V - var by name
PN - display procnames
VN <procname> - display all var names associated with this proc
SB <procname> - Set breakpoint
RB <procname> - Remove breakpoint
E+    Entry/Exit display on
E-    Entry/Exit display off
BE    Begin exec at start of user prog
GO    Continue exec from breakpont
TR     Exec one Pascal statement and return
T<num> Exec <num> Pascal statements and return
