The character string edit descriptors are the character constant
  and H edit descriptor.

  The character constant edit descriptor ('string' or "string")
  causes string to be output to an external record.  (For more
  information on the H edit descriptor, see FORMAT H in online Help.)

  Although no string edit descriptor can be preceded by a repeat
  specification, a parenthesized group of string edit descriptors can
  be preceded by a repeat specification.