If the search pattern contains LINE_END, the matched
  line break will be removed, causing the next line to
  be appended to the current line. To use LINE_END to
  only provide context for the search, the line break
  must be reinserted. This is done using the parameter
  convert_linefeeds.

  If the convert_linefeeds parameter is specified as ON,
  any linefeed characters appearing in the replacement
  string are removed and the built-in DECTPU procedure
  SPLIT_LINE is called at the point of the linefeed
  character.

  The following filter replaces any numbers that are the
  last characters on a line with the string "x":

     global_replace (number+LINE_END, "x"+lf,,,ON)

  The "lf" pattern is defined as a linefeed character in
  the supplied definitions file.

  If a LINE_END is included in a partial pattern
  variable, the line break can be retained by specifying
  the second optional parameter to the DECTPU STR
  procedure as a linefeed character, for example:

     global_replace (number+(LINE_END@sep),
                  '"x"+STR(sep,lf)',,ON,ON)

  The second parameter to STR specifies the string that
  line breaks occurring in the first parameter should be
  converted to. Line breaks are retained by specifying
  the linefeed character and setting the parameter
  convert_linefeeds to ON.