IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
sum le
k:
, f,g:(
k

). (
x:
k. f(x)
g(x)) 
sum(f(x) | x < k)
sum(g(x) | x < k)
Generated subgoals:
None
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html