@79
'IsLexem' is a special EBNFGenerator command:
this pseudo comment adhered to a terminal rule
will make the parser generator distinguish
between conventional identifiers and the ones
designated by the included lexem

--> IsText, IsGraphic
@80
'IsText' is a special EBNFGenerator command:
this pseudo comment adhered to an increment
will direct the unparser generator to
provide increments of this type with
a textual representation

--> IsGraphic, IsLexem
@81
'IsGraphic' is a special EBNFGenerator command:
this pseudo comment adhered to an increment
will direct the Unparser generator to
provide increments of this type with
a graphic representation

--> IsText, IsLexem
@82
'IsInvisible' is a special EBNFGenerator command:
this pseudo comment adhered to an increment
will prevent the Unparser generator from
generating representation routines for
increments of this type

--> IsNotSelectable
@83
'IsNotSelectable' is a special EBNFGenerator command:
this pseudo comment adhered to an increment will
direct the Unparser generator to make increments
of this type unselectable

--> IsInvisible
