[...]**0..1 to [...]? in deflongname
[...]**0..1 to [...]? in statement
[...]**0..1 to [...]? in statement_control:sym<if>
[...]**0..1 to [...]? in colonpair
[...]**0..1 to [...]? in variable and param_var
[...]**0..1 to [...]? in package_def
[...]**0..1 to [...]? in variable_declarator
[...]**0..1 to [...]? in routine_def and method_def
[...]**0..1 to [...]? in signature