IF YOU CAN SEE THIS go to http://www.cs.cornell.edu/Info/People/sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
mul nat plus
x,y:
. x
y

| By: |
Auto |
Generated subgoal:
| 1 |
1. x : 
2. y : 
x y 
 | 1 step |
About:
IF YOU CAN SEE THIS go to http://www.cs.cornell.edu/Info/People/sfa/Nuprl/Shared/Xindentation_hack_doc.html