Thank you chaps.
Now, what if you get
"Nxxxxx own navigation to XXX", or
"Nxxxxx direct XXX"
and XXX does
not lie on the filed route? Let' say it lies close to CCC. Should I, upon reaching XXX take a reasonable intercept to the filed route? Or should I proceed to DDD?
It's a bit like when you ask for 20 degrees left due to weather (to avoid a CB, say). When having passed the CB, should one do a DCT to the next cleared waypoint, or do a reasonable intecept of the previous route? I think it is the former.
Does the "cleared to [destination]" phrase mean anything whatsoever, in the context of the questions I am asking? I don't see that it does. I don't think the controller at Prague made a note on the computer system which got sent to all enroute sectors advising them of the whole-route clearance
