Who Cites firstn?
firstn	Def firstn(n;as) Def == Case of as; nil  nil ; a.as'  if 0<n a.firstn(n-1;as') else nil fi Def (recursive)
	Thm* A:Type, as:A List, n:. firstn(n;as)  A List
lt_int	Def i<j == if i<j true ; false fi
	Thm* i,j:. (i<j)

Syntax:

firstn(n;as)

has structure:

firstn(n; as)

About: IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html