Length of class/"double" classes

[Matt]

No: HPFGUIDX 79755

Matt: 

> > You (and the Lexicon) have interpreted 
> > "double" as double in length.  I thought that 
> > it referred instead to doubling the *size* of 
> > the class ....  If there is anything in canon 
> > that conclusively resolves the difference, I 
> > missed it.


Pip: 
> You've just quoted it ;-)
> 
> In British school terminology 'double potions' 
> *always* means 'double-length potions'. 
> 

OK, then, so long as I'm only ignorant about the RW, and not about the
books!  :)

-- Matt