gf-3.1.6: lib/src/api/SyntaxFre.gf
--# -path=.:alltenses:prelude instance SyntaxFre of Syntax = ConstructorsFre, CatFre, StructuralFre, CombinatorsFre ;
--# -path=.:alltenses:prelude instance SyntaxFre of Syntax = ConstructorsFre, CatFre, StructuralFre, CombinatorsFre ;