comma_operator_immutable(permission_error(modify, operator, ','), permission_error(modify, operator, ','), permission_error(modify, operator, ',')).
bar_low_priority_rejected(permission_error(create, operator, '|')).
invalid_operator_specifier(domain_error(operator_specifier, yfy)).
curly_braces_operator_rejected(permission_error(create, operator, {})).
infix_postfix_clash_rejected(permission_error(create, operator, >)).