PPL allows user defined constants in the following formats:

     $#.## - A MONEY constant (dollar sign followed by optional dollars
             followed by decimal point followed by cents; # = 0-9)
     #h    - An INTEGER hexadecimal constant (# = 0-9 & A-F)
     #d    - An INTEGER decimal constant (# = 0-9)
     #o    - An INTEGER octal constant (# = 0-7)
     #b    - An INTEGER binary constant (# = 0-1)
     #     - An INTEGER constant (# = 0-9)
     "X"   - A STRING constant (X = any displayable text)
     @X##  - An INTEGER @X constant (# = 0-9 & A-F)