Def Connex(T;x,y.R(x;y)) == x,y:T. R(x;y)  R(y;x)

is mentioned by

Thm* R:(TTProp).  Thm* (a,b:T. Dec(R(a,b))) Thm*  Thm* (Connex(T;x,y.R(x,y)) Thm* ( Thm* ((a,b:T. Thm* ((strict_part(x,y.R(x,y);a;b) Thm* (( Symmetrize(x,y.R(x,y);a;b) Thm* (( strict_part(x,y.R(x,y);b;a)))	[connex_iff_trichot]
Thm* R,R':(TTProp). Thm* (x,y:T. R(x,y)  R'(x,y)) Thm*  Thm* Connex(T;x,y.R(x,y))  Connex(T;x,y.R'(x,y))	[connex_functionality_wrt_implies]
Thm* R,R':(TTProp). Thm* (x,y:T. R(x,y)  R'(x,y)) Thm*  Thm* (Connex(T;x,y.R(x,y))  Connex(T;x,y.R'(x,y)))	[connex_functionality_wrt_iff]
Def Linorder(T;x,y.R(x;y)) == Order(T;x,y.R(x;y)) & Connex(T;x,y.R(x;y))	[linorder]

Try larger context: StandardLIB IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html