[css3-values] feedback

3.3 Quoted Strings
EXAMPLE 3
Double quotes cannot occur inside double quotes, unless escaped (as 
|"\""| or as |"\22"|).
Analogously for single quotes (|'\''| or |'\27'|).

Might an explanation of \22  being the hexadecimal escape for quotes and
\27 being the hexadecimal escape for single quote be helpful.

An additional example using the o'clock string might be useful.

It seems unclear (to me) if the sample in the parenthesis is permitted 
or prohibited,
but maybe that just me.

Sincerely,
Dennis German