An armed track records audio. An armed project records history. Every save, on your own disk.
Hit ⌘S like you always do.
ARMED writes the version and the sentence:
reverb decay 1.2s → 2.4s. drop moved, bar 8 → 12.
Two versions. One song.
Live can't. ARMED splices both sets of changes into one.
Nothing is written until you say so.
Every dot is a save. A variation leaves the line when you try something, and comes back when it works.
try anything.
lose nothing.
Put the risky idea on a variation. Keep it, or bin it.
Every save is still there, and any two versions can go back into one.