16 /* * when requesting a description of a node (a set of nodes, actually), * you get back an "array" of these, where the actual length of the * descr_str is noted in descr_len (which includes the trailing nul * byte), rounded up to the nearest four (sizeof(int32_t) actually). * * NEXT_DESCR() will take a pointer to a description and advance it to * the next description. */