IF YOU CAN SEE THIS go to http://www.cs.cornell.edu/Info/People/sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
hsuc add sym all(m:hnum. all(n:hnum. equal(suc(add(m,n)),add(suc(n),m))))
By:
HOL "hsuc_add_sym"
Generated subgoals:
None
About:
IF YOU CAN SEE THIS go to http://www.cs.cornell.edu/Info/People/sfa/Nuprl/Shared/Xindentation_hack_doc.html