'Work offline' option upgrade

[Somebody1]

The 'Work offline' option is a very interesting option. But unfortunately, the option affects the entire window, which very annoying. I think it would be more useful if we could also apply it to only one tab or … even to one container group. It would be very useful to be able to make a website I am using for reference just stored in the cache (saving bandwidth [note:I assume it saves bandwidth]), while perhaps an online text editor, like Google Docs, still accessing the web (allowing auto-save/sync). Here's how I think it should work: if we left-click on a tab, the menu should also contain the option make tab work offline and below it make container tab group work offline.

[Jon]

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