Hi,
[Missing things in Said()]
Expressions are always connected to each other on the _right_ branch, either by
means of a pair of augmentation codes (as is most common), and a few that are
attached directly. The latters are those which bear no "conditions" (i.e. not
optional, not grouped with (), eetc.). This means that in
Expression : MainExp , Expression
Expression will be linked to the topmost tree node in the MainExp subtree,
while
/ Subexpression
gets linked to the rightmost branch at the top level.
Hope this helps. I know it's messy - not really easy to understand without a
set of diagrams to refer to either.
Lars
