=BUILTINS.D() -> {"DATE",DATE;"DATEDIF",DATEDIF;...}
DEFINE( BUILTINS.D, LAMBDA( VSTACK( HSTACK("DATE", DATE), HSTACK("DATEDIF", DATEDIF), HSTACK("DATEVALUE", DATEVALUE), HSTACK("DAVERAGE", DAVERAGE), HSTACK("DAY", DAY), HSTACK("DAYS", DAYS), HSTACK("DAYS360", DAYS360), HSTACK("DB", DB), HSTACK("DBCS", DBCS), HSTACK("DCOUNT", DCOUNT), HSTACK("DCOUNTA", DCOUNTA), HSTACK("DDB", DDB), HSTACK("DEC2BIN", DEC2BIN), HSTACK("DEC2HEX", DEC2HEX), HSTACK("DEC2OCT", DEC2OCT), HSTACK("DECIMAL", DECIMAL), HSTACK("DEGREES", DEGREES), HSTACK("DELTA", DELTA), HSTACK("DETECTLANGUAGE", DETECTLANGUAGE), HSTACK("DEVSQ", DEVSQ), HSTACK("DGET", DGET), HSTACK("DISC", DISC), HSTACK("DMAX", DMAX), HSTACK("DMIN", DMIN), HSTACK("DOLLAR", DOLLAR), HSTACK("DOLLARDE", DOLLARDE), HSTACK("DOLLARFR", DOLLARFR), HSTACK("DPRODUCT", DPRODUCT), HSTACK("DROP", DROP), HSTACK("DSTDEV", DSTDEV), HSTACK("DSTDEVP", DSTDEVP), HSTACK("DSUM", DSUM), HSTACK("DURATION", DURATION), HSTACK("DVAR", DVAR), HSTACK("DVARP", DVARP))))
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