OBJNUM lookup(SYMBOL name)
This function finds the object number for the object name specified by the argument name. If no object exists with that name, the error ~namenf is thrown. Example:
lookup('root)
=> #1
ancestors() | children() | chparents() | create() | data() | del_objname() | destroy() | has_ancestor() | lookup() | objname() | objnum() | parents() | set_objname()