document page breaking a bit?

[Han-Wen Nienhuys]

Hi Joe,

I was looking at the brown-paper-bag bug in 11.24  (last page disappearing)
and I found that I had a hard time figuring out what the code does. Could
you add some comments explaining how the different classes fit together?
eg., I'm missing the finer point of 

-  Break_position
-  Line_division

also, if you could look into that bug, that would be even better! :)


-- 

Han-Wen Nienhuys - address@hidden - http://www.xs4all.nl/~hanwen