Calc
Inductive()
Lemma
NewType()
Proof
QExists()
QForAll()
Struct()
axiom()
cond()
define()
prove()
search()
simp()
AstRef
Const()
Consts()
Context
ExprRef
FreshConst()
FuncDeclRef
Function()
SortRef
TypeVarRef
main_ctx()