Debugger Commands:
 expression/
 expression\    Set dot to expression and display its contents.
 expression@    Set dot to expression and display the contents
                of its contents.
 expression=    Display value of expression.
 /              Increment dot and display contents of that address.
 \              Decrement dot and display contents of that address.
 @              Set dot to contents it points to and then print new contents.
 =              Print value of dot.
 expr,nlines,n  Display the nlines instructions which begin at expr.
                Default expr is dot; default nlines is 24.
 expr,nlines,p  Display the nlines instructions which end at expr.
                Default expr is dot; default nlines is 24.
 d              Display the contents of the registers.
 s              Print a trace of subroutine calls.
 expr,brknum,b  Set breakpoint brknum (2 <= brknum <= 15) at expr.
                If expr is 0, clear breakpoint brknum; if omitted,
                print all breakpoints.  If brknum omitted, first
                available breakpoint is used.
 expr,g         Execute starting at expr until exception, breakpoint,
                or termination. If expr omitted, start at current pc.
 expr,gb        Go past current breakpoint expr times.
 expr,x         Execute the next expr instructions.
 expr,y         Like x but subroutine calls are single instructions.
 type,t         Temporarily set typeout mode to type.  Type can be:

                's',strLength--string; or 'i'--instruction.  Apostrophes
                are considered part of the type specification.
 type,tt        Permanently set typeout mode to type.
 expr1,expr2,type,r
                Replace contents of expr1 with expr2.  Expr2 has type type.
 register,expr,rr
                Replace contents of register with expr.  Registers
                are referred to as %%r0-%%r15, %%ap, %%fp, %%sp, or %%pc.
 base,ir        Set input radix to base.
 base,or        Set output radix to base.
 displacement,of  Set maximum offset from a symbol to displacement.
 length,sl      Set maximum symbol length for display.
 sp             Switch from stopping the whole team at an exception to
                just stopping the process with the exception, or vice versa.
 pattern,lowlimit,highlimit,type,f
                Find pattern in the address range lowlimit to highlimit-1.
                Pattern's type is type, and a mask determines how much
                of it is significant:
 expr,m         Set find's mask to expr. -1,m forces a complete match;
                f,m matches only the last four bits; 0,m matches anything.
 expr,type,w    Watch a specified location to see when it changes
                If expr is omitted, show watched location.
		     If expr is 0, stop watching.  If type is omitted,
                use default.
 expr,type,wb   Same as \"w\" except the location is only
                examined at breakpoints; breakpoints do not
                case a stop unless the location has changed.
 h              This help command.
 #              Internal debugger statistics.
 q              Exit the debugger and the program. 
Further information can be found in the V manual.
