The text is split into segments automatically, and sometimes you might need to join or split them.
To join adjacent segments, hold down the Shift or Ctrl key and select them with your mouse. Then press .
The segments will be joined.
Segments can only be joined if they belong to the same paragraph.
To split a segment, place the cursor in the Source where you want the segment split, then press .
The segment will be split into two parts at that point.