Definitions hol Sections HOLlib Doc
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Some definitions of interest.
xmiddleDef XM == P:Prop. Dec(P)
Thm* XM{i}  Prop{i'}
notDef A == A  False
Thm* A:Prop. (A Prop
stypeDef S == {T:Type| x:T. True }
Thm* S  Type{2}

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

Definitions hol Sections HOLlib Doc