CLEARED APPROACH.
Hello everyone! Can someone provide me any reference. So we're flying usual ILS approach. Arriving via star ,and approaching IAF. For example IAF has to be passed at 5000', IF 2600 and FAF at 1600'. At the moment of approaching IAF, ATC says :"...cleared ILS RW...", Does it mean that we are able to descend as published?? Give me reference please. Thanx.