Limited set of reserved expressions:
is ⋅ it ⋅ be ⋅ at ⋅ on ⋅ to ⋅ point ⋅ that ⋅ this ⋅ supertype ⋅ subtype ⋅ rewrap ⋅ wrapped ⋅ intro ⋅ outro ⋅ empty ⋅ fetch ⋅ relay ⋅ not ⋅ swap ⋅ pop ⋅ push ⋅ top ⋅ key ⋅ shift ⋅ exact
Generalized internal expressions:
identity ⋅ initial ⋅ terminal