Editor-only dock, per clip. Arm with the On switch in the dock header or the clip pad ⋮ → Timeline On.

Transport: play/pause, stop (back to 0), loop, and snap (magnet — seeks and keyframes snap to beats when a BPM exists). Status badges show timecode, bars.beats, and OFF / ARMED / PLAY / PAUSE. Duration is set in Bars (1–64) or Time (seconds); Fit bars stretches playback rate to land exactly on a bar count.

Keyframes

Add KF (available while armed) lists every keyframable property of the clip: layer opacities, the clip camera (FOV/position/target/orbit), video/plane transforms, fractal parameters, title transforms and font size, numeric shader uniforms, Mesh Group mesh transforms, light position/intensity/color, look (fog density, bloom, exposure, SSAO), and Control Cue DMX / MIDI values. The ◆ diamond next to a control in the inspector writes a keyframe for that parameter at the playhead.

Keyframes are draggable diamonds on their tracks. Select one to edit time, value, and easing: Linear, Ease In, Ease Out, Ease In-Out, Step. You need at least two keyframes with different values to see motion.

What locks when

Armed (on, not playing) — for that clip only: no adding/removing layers and no attaching or changing media. Parameters stay editable and keyframeable.
Playing — the clip's parameters are driven by keyframes and the inspector is locked for it. Pause to edit. Other clips are unaffected.
Turn Timeline Off to add or remove layers again.

The playhead is ephemeral — it is never saved. The score (tracks, keyframes, duration, loop, on/off) saves with the clip. Triggering the pad restarts an armed timeline from 0.