IF YOU CAN SEE THIS go to http://www.cs.cornell.edu/Info/People/sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
hisl or isr 'a,'b:S. all(x:hsum('a; 'b). or(isl(x),isr(x)))
By:
HOL "hisl_or_isr"
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
'a,'b:S. all(
x:hsum('a; 'b). or(isl(x),isr(x)))
