Clarification on issue #136

[Simeon Greene <simeon.m.greene@oracle.com>]

see http://services.arjuna.com/wscaf-issues/show_bug.cgi?id=136.

The latest comments state:
Change parent context from list to zero or one occurrence and further
change 
parents’ context to parent’s context. Alistair motioned Greg second. No 
opposed. 8 in favor.

It then goes on to say:
begin with passed context must set the parent context.

A strict interpretation of the text makes these two excerpts
contradictory in my opinion.  The former excerpt says the element should
be optional "zero or one occurrence", yet the latter says that the begin
operation "must" set it.  This will cause a conflict between the schema
and the spec.  I recommend we either change "must" to "may" or make
parent context a mandatory element of the context.  I prefer the first
recommendation.