cDEC$ FREEFORM
  cDEC$ NOFREEFORM

  The FREEFORM directive specifies that source code is in free-form
  format.  The NOFREEFORM directive specifies that source code is in
  fixed-form format.

  The "c" in cDEC$ is one of the following:  a C (or c), !, or *.

  When the FREEFORM or NOFREEFORM directives are used, they remain in
  effect for the remainder of the file, or until the opposite
  directive is used.  When in effect, they apply to include files,
  but do not affect USE modules, which are compiled separately.

  For compatibility, !MS$FREEFORM and !MS$NOFREEFORM can be used in
  place of cDEC$ FREEFORM and cDEC$ NOFREEFORM.