Use the Find Text field to search for a specified string.

  The direction of the search is controlled as follows:

   -  Press an arrow key to search text in the direction indicated by
      that arrow.  This also sets the default search direction.

   -  Press Ctrl/N to search forward (down) through the file, regardless
      of the arrow indicator position.

   -  Press Ctrl/P to search backwards (up) through the file, regardless
      of the arrow indicator position.

  If you click the "Replace with" toggle button, the editor replaces each
  instance of the search string with the text entered in the Replace with
  field.