Have a look at the russian AIP (english version), you will find that ALL approaches are designed the same way, with a 'box' to fly at different altitude. If you are on the approach segment AND on 'RADAR Vectors' It does mean that you have to follow them (sic). Approaching FK or the last one in downwind you have to turn yourself...yes yes it is written...
A little bit different but it works... It is as meaningfull as 'report level 1500 ft checks complete' at NHT...
ENjoy russia, fly the arrival box..
