Complex sentence: The CL-600 design was stretched 5.92 metres (19 feet 5 inches) to create the CRJ100, with fuselage plugs fore and aft of the wing, two more emergency exit doors, plus a reinforced and modified wing.
Split into simpler sentences: The CL-600 design was stretched 5.92 metres (19 feet 5 inches) to create the CRJ100. The stretch was achieved using fuselage plugs fore and aft of the wing while two additional emergency exit doors and the adoption of a reinforced and modified wing.