Vesting

Earned over time.

Tokens set aside for someone and released to them second by second, after an optional cliff. Whether you can take back the unvested part is decided now, once, and shown to them.

What vests
Who the tokens vest to. Only this address can claim them.
Deposited now, released over the schedule below.
In your time zone. A start in the past counts from then.
Nothing can be claimed before it. 0 for none.
From the start to the last token.
Off: nobody, you included, can ever stop it. On: you can end it at any time; what has vested stays theirs.