{ Mask Type }
  cMask_SpecialChar   = '\'; // after this you can set an arbitrary char
  cMask_UpperCase     = '>'; // after this the chars is in upper case
  cMask_LowerCase     = '<'; // after this the chars is in lower case
  cMask_Letter        = 'l'; // only a letter but not necessary
  cMask_LetterFixed   = 'L'; // only a letter
  cMask_AlphaNum      = 'a'; // an alphanumeric char (['A'..'Z','a..'z','0'..'9']) but not necessary
  cMask_AlphaNumFixed = 'A'; // an alphanumeric char
  cMask_AllChars      = 'c'; // any Utf8 char but not necessary
  cMask_AllCharsFixed = 'C'; // any Utf8 char #32 - #255
  cMask_Number        = '9'; // only a number but not necessary
  cMask_NumberFixed   = '0'; // only a number
  cMask_NumberPlusMin = '#'; // only a number or + or -, but not necessary
  cMask_HourSeparator = ':'; // automatically put the hour separator char
  cMask_DateSeparator = '/'; // automatically but the date separator char
{ cMask_SpaceOnly     = '_'; // automatically put a space          //not Delphi compatible        }
  cMask_NoLeadingBlanks = '!'; //Trim leading blanks, otherwise trim trailing blanks from the data

  {Delphi compatibility: user can change these at runtime}
  DefaultBlank: Char = '_';
  MaskFieldSeparator: Char = ';';
  MaskNoSave: Char = '0';