VMS Help FORTRAN, Data, Constants  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  A constant is a fixed value.  The value of a constant can be a
  numeric value, a logical value, or a character string.  There are
  seven types of constants:  integer, real, complex, bit, logical,
  character, and Hollerith.  Bit and Hollerith constants have no data
  type; they assume a data type that conforms to the context in which
  they are used.

  Additional Information (explode) :

• Bit
• Character
• Complex
• Hollerith
• Integer
• Logical
• REAL_4
• REAL_8
• REAL_16