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IF YOU CAN SEE THIS go to http://www.cs.cornell.edu/Info/People/sfa/Nuprl/Shared/Xindentation_hack_doc.html
At: assoced equiv rel
  EquivRel x,y:. x ~ y
By: Assert (EquivRel x,y:. Symmetrize(u,v.u | v;x;y))

Generated subgoals:

1   EquivRel x,y:. Symmetrize(u,v.u | v;x;y)
1 step
2 1. EquivRel x,y:. Symmetrize(u,v.u | v;x;y)
  EquivRel x,y:. x ~ y
1 step

About:
int
IF YOU CAN SEE THIS go to http://www.cs.cornell.edu/Info/People/sfa/Nuprl/Shared/Xindentation_hack_doc.html

(3steps total) PrintForm Definitions Lemmas num thy 1 Sections StandardLIB Search Doc