AsciiUtil provides common routines for ASCII char validations and
conversations.
static public UPPER:Numberstatic public LOWER:Numberstatic public DIGIT:Numberstatic public SPACE:Numberstatic public PUNCT:Numberstatic public CNTRL:Numberstatic public BLANK:Numberstatic public HEX:Numberstatic public UNDER:Numberstatic public ASCII:Numberstatic public ALPHA:Numberstatic public ALNUM:Numberstatic public GRAPH:Numberstatic public WORD:Numberstatic public XDIGIT:Number