[tei-council] Mode attribute for <classes>

[Sebastian Rahtz]

Lou and I, having wagged our chins, are vaguely thinking that adding 
@mode to
<memberOf> is the least worst thing to do. Leave <classes> alone, but allow
<memberOf mode="delete" key="att.global"/> to mean "remove me from the
att.global class".

I don't like it, but I'd rather  deal with that than a mode on <classes>

-- 
Sebastian Rahtz      
Information Manager, Oxford University Computing Services
13 Banbury Road, Oxford OX2 6NN. Phone +44 1865 283431