!--
StepCondition
!==
LambdaExpression
&
FOLFormula
LambdaExpression
*
Vector
OccConnector
+
Vector
Ant
FiniteContext
OccConnector
SequentIndex
Suc
HashMultiset
Multiset
++
LList
FiniteContext
Sequent
++:
Sequent
+:
Sequent
-
Vector
Ant
SequentIndex
Suc
HashMultiset
Multiset
---
StepBlock
-->
FOLFormula
LambdaExpression
--?
StepBlock
->
expr
Ty
:+
Sequent
:++
Sequent
::
LambdaPosition
Substitution
FOLPosition
HOLPosition
LList
<
Vector
<->
FOLFormula
LambdaExpression
<=
Vector
===
LambdaExpression
=^
RichOccSequent
=^=
FormulaOccurrence
>
Vector
>=
Vector
^
LambdaExpression
|
FOLFormula
LambdaExpression
|>
Reduction