ST_WRITING
if (STps->rw == ST_WRITING && !STp->pos_unknown) {
if (STps->rw == ST_WRITING && !STp->pos_unknown) {
STps->rw = ST_WRITING;
} else if (STps->rw != ST_WRITING &&
STps->rw = ST_WRITING;
if (STps->rw == ST_WRITING) {
if (STps->rw == ST_WRITING &&
if (STps->rw == ST_WRITING)
if (STps->rw == ST_WRITING) /* Writing */