-**Sign in** with a hub URL and a personal access token (Settings › Tokens on the hub).
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-**Proposals** view: needing me, mine, open; detail with blockers, approvals, checks and changes; check out the projected state; review; seal your approval and land, both through `oxy` in a terminal with your own key.
-**Diffs in the editor**: expand a proposal to its files and open each in VS Code's diff editor (target against projected state), or View Changes for all of them at once, without checking out.
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-**Review threads** in those diffs and on the checked-out proposal's files, anchored to atoms so they follow lines through rebases.
-**Open on Remote** in the Oxygen extension works for hubs once this extension is installed.
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-**Status bar**: the checks of the proposal whose source is your current bookmark, live.
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`npm run check` type-checks, bundles and runs the Node tests; the hub client tests start a real hub from `../oxygenhub/target/release/oxygenhub` when it exists.