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

  Each constant, variable, array, expression, or function reference
  in a Fortran statement represents typed data.  The data type of
  these items can be inherent in their constructions, implied by
  convention, or explicitly declared.  The data types available in
  Fortran are integer, REAL (REAL*4), DOUBLE PRECISION (REAL*8),
  REAL*16, COMPLEX (COMPLEX*8), DOUBLE COMPLEX (COMPLEX*16), BYTE
  (equivalent to LOGICAL*1 and INTEGER*1), logical, character, and
  Hollerith.

  Constants, variables, arrays, scalar fields, aggregate fields,
  character substrings, and expressions can be specified in many
  places in a Fortran program.  Fortran statements and expressions
  have individual restrictions governing which of these items can
  used in them and in what form.  Thus, to avoid repeatedly
  enumerating lists of the various items that can be specified with
  the various statements and expressions, the items are divided into
  four general categories:  scalar reference, scalar memory
  reference, array name reference, and aggregate reference.  The
  names of these categories are used throughout the "DEC Fortran
  Language Reference Manual" to identify what can be included in a
  particular statement or expression.

  Additional Information (explode) :

• Aggregate Reference
• Arrays
• Array Name Reference
• Constants
• Expressions
• Records
• Scalar Reference
• Substrings
• Types
• Variables