Re: ALTERNATIVE PROPOSAL: Short-cut syntax for in-out and in-only patterns

I (obviously) have more sympathy for variable tag names, which were the 
subject of my earlier proposal, but I definitely prefer Amy's (friendly) 
amendment to Sanjiva's original.

Jean-Jacques.

Amelia A. Lewis wrote:

[large snip]

> Introduce the following rule:
>     - When a pattern contains only one message in a given direction,
> then the messageReference attribute is optional.  When a pattern
> contains more than one message in a given direction, then the
> messageReference attribute is required (to disambiguate which message is
> defined by the element).