[9fans] OT: Acid question?

[ISHWAR RATTAN]

I am trying to learn how to use acid for source
level debugging using the built-in functions. I waould like
to know how to display/exmine the varibales used in the
program. Sample code for context:
 void main()
 {
   int a, b, c;
   a = 12;
   b = 21;
   c = a + b;
   print("c: %d\n", c);
   exits(nil);
 }

 program is compiled and acid is called on the image:
 acid: new()
 ..
 acid: bpset(print)
 ..
 acid: next()
 ..
 at this point a = 12 has been executed. How to examine
 the value in acid?

-ishwar