RE: [sv-ac] call to vote on 1549

The LRM states in other places restrictions on the use of $. 
The question is whether the example fulfills those conditions.

The following quoted wording is a little unclear: 

> An actual argument can replace any of the following:
> - Identifier
> - Expression
> - Event control expression
> - Upper delay range or repetition range if the actual argument is $

"can replace" seems a little problematic here.
An actual argument cannot really replace an expression. E.g., it cannot
replace a+b. It can replace a formal argument which is used as an
expression, which is a little different.

And does this list cover all the possibilities, or is it just intended
to be examples?

And does the last item mean:
1. If the actual argument is $, it can be used only in this way? If it
is not $, can it be used in this way?
2. It can be used in this way only if it is $? If it is $, can it be
used in another way?

Thanks,
Shalom

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