IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
gcd ex n
1
1. b :
2.
b1:
. b1<b 
(
a:
. 
y:
. GCD(a;b1;y))
3. a :

y:
. GCD(a;b;y)
Generated subgoals:
1 |
4. b = 0
 y: . GCD(a;b;y)
 | 2 steps |
2 |
4. b = 0
 y: . GCD(a;b;y)
 | 6 steps |
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html