translated features and non-translated features

From: Toon Knapen (toon.knapen_at_[hidden])
Date: 2004-10-20 06:29:17

When looking at the explanation of the different types of features 
(incidental, propagated, ...) I was wondering what terminology you use 
to distinguish a feature that is translated into a flag for a certain 
compiler (such as <optimization>) and a feature that is directly passed 
on to the compiler (such as <cxxflags>).

I was wondering about this because in your recent mail about the using 
rule, the 3th argument can only contain non-translateable features IUC?