From the linked documentation:
>
> There are four system-wide options that manage how updates are handed:
> - refresh.timer: defines the refresh frequency and schedule
> - refresh.hold: delays the next refresh until the defined time and date
> - refresh.metered: pauses refresh updates when network connection is metered
> - refresh.retain: sets how many revisions of a snap are stored on the system"
>
I think people would be much happier with snap if there was a `refresh.off` option.
If that's too over-the-line for Canonical, a `refresh.prompt` with a dismissible nag-message would be better.