abstract class $IS_NIL


Descendants
$NIL RECTANGLE RAT $STRINGS
$STRING{_} $STRING{_,_,_} BINSTR $TEXT_STRING{_}
$TEXT_STRING{_,_,_} HEX_STR STR RUNES
$FSTRINGS $FSTRING{_} FBINSTR $FTEXT_STRING{_}
$FTEXT_STRING{_,_,_} FSTR FRUNES $SEARCH{_,_}
$VALUE{_} $ORDERED{_} TIMES CHAR_CODE
ANGLE TIME_STAMP ANGLED UNICODE
$CHAR{_} RUNE CHAR $DATES{_}
DATES ERA_DATES ELAPSED $NFE{_}
MONEY $ARITHMETIC{_} $RATIONAL{_} $REAL{_}
FLT FLTD $COMPLEX{_,_} CPX
CPXD $SIMPLE_NUM{_} $WHOLE_NUM{_} $CARDINAL{_}
FIELD $INTEGER{_} INT CARD
INTI ORDER_WEIGHT TOKEN $ENUMS{_}
TRI_STATE DATE_FORMS SALUTATIONS DIRECTIONS
INFO_KINDS SIGN_POSITIONS MAP_PARTS SYS_EXCEPT
ERE_LEX_TOKENS CAL_DISPLAY_ORDERS UNITS PERMISSIONS
TIME_SUFFIX CURSOR_ERRORS VERSION_KEYS ADDRESS_CODES
SYMBOLS UNIT_KINDS FLUSH_CMDS FILE_KINDS
MON_SPACING WEEKDAYS ERE_ERROR_KINDS CODE_KINDS
SCRIPTS NAME_CODES FILE_LOCS CHAR_CLASS
MAP_MODES ADDRESS_KEYS PHONE_CODES FILE_MODES
CATEGORIES ACCESS_CODES DATE_SUFFICES DT_CODES
CONVERSION_RESULTS NUM_SIGNS CHAR_MAPPINGS MONETARY_UNITS
CAT_STANDARDS PATH_KINDS CONDITIONALS SYS_CHANS
MONTHS



Public


Features
is_nil : BOOL ;

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