	EXAMPLE of sdb SESSION
	
	o	Invoke the debugger: 
	
		$ sdb main
	
		* sdb will display "no process" to indicate there is no core file.
	
	o	Create a breakpoint on the main procedure: 
	
		*main:b
	
	o	Start execution, sending one argument: 
	
		*r ARGUMENT
	
	o	Display the surrounding (window) text:
	
		*w
	
	o	Find the line number in the source for the statement "first (&rad);":
	
		*/first (&rad);         
		
	o	Set a breakpoint at this line:
	
		*18b	
	
	o	Set a breakpoint at the num_compare function:
	
		*num_compare:b
	
	o	Verify the previously set breakpoints:
	
		*B
	
	o	Execute the program until the first breakpoint:
	
		*c
	
	o	Step into the function 'first':
	
		*s
	
	o	Display a window:
	
		*w
	
	o	Step up to the return statement:
	
		*s
		*s
		*s
	
	o	Examine the contents of 'r' within function 'first'.  
		Note that array notation is used to dereference the pointer:
	
		*first:r[0]/
	
	o	Deposit a different value into 'r' and verify:
	
		*r[0]!192
		*r[0]/
	
	o	Continue to the next breakpoint:
	
		*c
	
	o	Using the above steps, status what value is assigned to 'diff'.
	
	o	Continue the program until the program terminates.
	
	o	Exit the debugger:
	
		*q
