WRITE_CLIPBOARD

  Writes STRING format data to the clipboard.

  Syntax

     WRITE_CLIPBOARD (clipboard_label, {buffer | range | string})

  Parameters

     clipboard_label      The label for multiple entries in the clipboard.
                          Since the clipboard does not currently support
                          multiple labels, use any string including the null
                          string to specify this parameter.

     buffer               The buffer containing text to be written to the
                          clipboard.  TPU represents line breaks by a
                          line-feed character (ASCII (10)).  The buffer must
                          contain at least one character or line break.  If
                          it does not, TPU signals TPU$_CLIPBOARDZERO.

     range                The range containing text to be written to the
                          clipboard.  TPU represent line breaks by a
                          line-feed character (ASCII (10)).  The range must
                          contain at least one character or line break.  If
                          it does not, TPU signals TPU$_CLIPBOARDZERO.

     string               The string containing text to be written to the
                          clipboard.  The string must contain at least one
                          character.  If it does not, TPU signals
                          TPU$_CLIPBOARDZERO.