212man
It's 'Guess The Question' time. The question you answered is not the question being asked - apologies for sounding a bit like Donald Rumsfeld.
The statement posted was in response to the much asked question
"Why do we select 102% Nr for Cat A ops but not for Cat B Ops - or for that matter during OEI ops"
The only answer I can find that fits the published info is the one given. Apologies if you find it gobbledegook. If you tell me which bit you don't understand the I will try to explain further. Other 139 guys seem to get it but maybe you are not familiar with the type.
G