defs-are-searched-also:useful — ordinary primitive
binds CONTEXT with CURRENT. If the CURRENT VOCABULARY is in the search-order (later), then the CONTEXT vocabulary will be searched also. If the result of this word could lead into a recursive lookup with FIND it will throw CURRENT_DELETED and leave the CURRENT VOCABULARY unaltered.
MY-VOC DEFINITIONS MY-VOC-PRIVATE DEFS-ARE-SEARCHED-ALSO