How to find a standard text within a SapScript or SmartForm?

I need to track down where within a large number of custom sapscripts and smartforms a specific standard text (SO10) is being used.

Apart from the equivalent of "check the code for each print script", I've not found a workable solution online. Any suggestions?

After posting, I found a partial solution. The code below will search for a standard text within sapscripts, but not smartforms.

PARAMETERS: p_sttxt LIKE stxh-tdname.

DATA: BEGIN OF t_stxh OCCURS 0,
        tdname LIKE stxh-tdname,
        tdspras LIKE stxh-tdspras,
      END OF t_stxh.

DATA t_lines LIKE tline OCCURS 0 WITH HEADER LINE.

SELECT tdname tdspras FROM stxh INTO TABLE t_stxh
                         WHERE tdobject = 'FORM'
                         AND tdid = 'TXT'
                         AND tdspras = 'E'.

LOOP AT t_stxh.
  REFRESH t_lines.
  CALL FUNCTION 'READ_TEXT'
    EXPORTING
*       CLIENT                        = SY-MANDT
      id                            = 'TXT'
      language                      = t_stxh-tdspras
      name                          = t_stxh-tdname
      object                        = 'FORM'
    TABLES
      lines                         = t_lines
   EXCEPTIONS
     id                            = 0
     language                      = 0
     name                          = 0
     not_found                     = 0
     object                        = 0
     reference_check               = 0
     wrong_access_to_archive       = 0
     OTHERS                        = 0 .

  SEARCH t_lines FOR p_sttxt.
  IF sy-subrc EQ 0.
    WRITE:/ t_stxh-tdname, t_stxh-tdspras.
  ENDIF.

ENDLOOP.

This is a (fixed) version of the code found here: http://scn.sap.com/thread/179142