OK. You caught me. I'm a sucker for the phrase, "contingency RNAV routes." Can't help it. Always have been.
Believe it or not (and I cannot believe I'm actually admitting this), I WILL be treating it as bedtime reading. Although I'm quite intimate with FAA pubs (7110.65, TERPS, et al), my lack of familiarity with ICAO Annexes was recently brought to my attention and I aim to remedy that situation. What's more, the fact that ICAO wants money before they'll let me look at Annex 11 clearly means that there is something in there I simply MUST see. I'll let you know when I find it.
Dave