Look it up fast

Every control on an interactive top panel — two knobs doing six jobs, and the save gesture that isn't a button.

Every jack across all three faces, the 3-amp power supply trap, and the aux input hiding in the effects loop.

The numbers that answer a question — eight blocks, three snapshots, three amps of current.

All 440 amps, cabs and effects decoded from Line 6's own list. The same library as a full Helix.

Eight positions and how to spend them. What costs double, what collapses into one, and what to drop first.

Effects pedal, four-cable, direct, bass or interface — the cabling and the cab block state for each.

Four footswitch modes on three switches, three snapshots, and which layer a change belongs on.

Straight answers to the things people actually ask, in a sentence or two each.

Symptom, cause, fix — including the several entries that turn out to be documented behaviour rather than faults.

Block, snapshot, Play view, Edit view, 4CM, Legacy — plain definitions, with why each matters here.