Operator Properties

Operator properties can be accessed via the system predicates oper_property/2, set_oper_property/2 and reset_oper_property/2. The following predicate properties are sup-ported by the Jekejeke Prolog runtime library:
sys_usage: See the prolog texts section.
visible: See the module system section.
override: See the module system section.
sys_alias: See the syntax_operators section.
sys_portray: See the syntax_operators section.