On Wed, Jun 1, 2022 at 11:54 PM <[email protected]> wrote:

> [Med] That wording was on purpose. We could easily turn that text into the
> following:
>
> NEW:
>  If the definition of a cost mode does not indicate whether it
>  applies to a subset of cost metrics, ALTO implementations
>  MUST be prepared to accept that cost mode for any cost metric.
>
> ... but there is a high risk that this behavior will overlooked and thus
> the default mode will be the rule. This would have interoperability
> implications as it is likely that some modes can't be associated with all
> cost metrics.
>
> The SHOULD is some sort of authors guideline to assess the applicability
> and record it.
>

Hi Mohamed,

Understood.  I suggest using "should" rather than "SHOULD", and then saying
something like what you just said here to underscore why it's important for
future documents to go into this.

-MSK
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