APT post-processor words. By convention these are a subset of the vocabulary words that appear to the left of the forward slash in an APT statement.
switch (subtype)
{
case 1: return "END";
case 2: return "STOP";
case 3: return "OPSTOP";
case 4: return "ISTOP";
case 5: return "RAPID";
case 6: return "SWITCH";
case 7: return "RETRCT";
case 8: return "DRESS";
case 9: return "PICKUP";
case 10: return "UNLOAD";
case 11: return "PENUP";
case 12: return "PENDWN";
case 13: return "ZERO";
case 14: return "GOHOME";
case 15: return "RESET";
case 16: return "GOCLER";
case 17: return "DRAWLI";
case 18: return "PROBY";
case 19: return "PROBX";
case 20: return "ULOCKX";
case 21: return "LOCKX";
case 22: return "FACEML";
case 1001: return "PLUNGE";
case 1002: return "HEAD";
case 1003: return "MODE";
case 1004: return "CLEARP";
case 1005: return "TMARK";
case 1006: return "REWIND";
case 1007: return "CUTCOM";
case 1008: return "REVERS";
case 1009: return "FEDRAT";
case 1010: return "DELAY";
case 1011: return "AIR";
case 1012: return "DELETE"; // also OPSKIP
case 1013: return "LEADER";
case 1014: return "PPLOT";
case 1015: return "MACHIN";
case 1016: return "MCHTOL";
case 1017: return "PIVOTZ";
case 1018: return "MCHFIN";
case 1019: return "SEQNO";
case 1020: return "INTCOD";
case 1021: return "DISPLY";
case 1022: return "AUXFUN";
case 1023: return "CHECK";
case 1024: return "POSTN";
case 1025: return "TOOLNO";
case 1026: return "ROTABL";
case 1027: return "ORIGIN";
case 1028: return "SAFETY";
case 1029: return "ARCSLP";
case 1030: return "COOLNT";
case 1031: return "SPINDL";
case 1032: return "IFRO";
case 1033: return "TURRET";
case 1034: return "NOTUSED";
case 1035: return "ROTHED";
case 1036: return "THREAD";
case 1037: return "TRANS";
case 1038: return "TRACUT";
case 1039: return "INDEX";
case 1040: return "COPY";
case 1041: return "PLOT";
case 1042: return "OVPLOT";
case 1043: return "LETTER";
case 1044: return "PPRINT";
case 1045: return "PARTNO";
case 1046: return "INSERT";
case 1047: return "CAMERA";
case 1048: return "PREFUN";
case 1049: return "COUPLE";
case 1050: return "PITCH";
case 1051: return "MDWRIT";
case 1052: return "MDEND";
case 1053: return "ASLOPE";
case 1054: return "CYCLE";
case 1055: return "LOADTL";
case 1056: return "SELCTL";
case 1057: return "CLRSRF";
case 1058: return "DWELL";
case 1059: return "DRAFT";
case 1060: return "CLAMP";
case 1061: return "PLABEL";
case 1062: return "MAXDPM";
case 1063: return "SLOWDN";
case 1064: return "MAXVEL";
case 1065: return "LPRINT";
case 1066: return "MOVETO";
case 1067: return "CORNFD";
case 1068: return "PBS";
case 1069: return "REGBRK";
case 1070: return "VTLAXS";
case 1071: return "WCORN";
case 1072: return "MAGTAP";
default: return null;
}