chunk_t *chunk_add_before(const chunk_t *pc_in, chunk_t *ref) { return(chunk_add(pc_in, ref, BEFORE)); }
chunk_t *chunk_add_before(const chunk_t *pc_in, chunk_t *ref) { return(chunk_add(pc_in, ref, direction_e::BACKWARD)); }
chunk_t *chunk_add_after(const chunk_t *pc_in, chunk_t *ref) { return(chunk_add(pc_in, ref, AFTER)); }
chunk_t *chunk_add_after(const chunk_t *pc_in, chunk_t *ref) { return(chunk_add(pc_in, ref, direction_e::FORWARD)); }