Specify the data type for a variable in a declarative statement or
parameter list:
 
    - INTEGER      A 16-bit signed integer variable.
    - LONG         A 32-bit signed integer variable.
    - SINGLE       A single-precision 32-bit floating-point variable.
    - DOUBLE       A double-precision 64-bit floating-point variable.
    - STRING * n%  A fixed-length string variable n% bytes long.
    - STRING       A variable-length string variable.
 
See Also    <AS>          <BASIC CHARACTER SET>         <COMMON>
            <DECLARE>     <DEF FN>                       <DIM, REDIM>
            <FUNCTION>    <SHARED, STATIC>               <SUB>
            <TYPE>