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[DyssalC]

The "notes" verb will bring up any objectives you have if you're an antag or miscreant, along with your PIN number.

The ideal pressure to set pure-oxygen internals (Emergency tanks and jetpacks.) to is 17. Any lower and you'll suffocate and any higher and you'll use up O2 faster.

On that note, I don't know the ideal pressure for air-mix internals, does anyone know it? Also, is there a functional difference between breath-masks and gas-masks, other than obscuring your identity?

Air mixes I believe are 100 to be able to breathe, or around there anyways.

Also, possibly not the most useful thing, but.
You can emulate the quick-draw of the Derringer by putting your weapon of choice on your hip, holding your PDA in hand, and using WASD controls to press V to switch your PDA with your weapon.