ST_SHORT_FILEMARKS
if (un->un_init_options & ST_SHORT_FILEMARKS) {
un->un_dp->options |= ST_SHORT_FILEMARKS;
un->un_dp->options &= ~ST_SHORT_FILEMARKS;
un->un_dp->options &= ~ST_SHORT_FILEMARKS;
un->un_dp->options |= ST_SHORT_FILEMARKS;
if ((un->un_dp->options & ST_SHORT_FILEMARKS) &&
ST_READ_IGNORE_ILI | ST_READ_IGNORE_EOFS | ST_SHORT_FILEMARKS |\