What it measures
The bars are the bed's loudness second by second, with the tenth and ninetieth ruled across them: a bed that breathes has a tall strip, a bed that hisses has a flat one. Under them, the same bed by frequency. The figures are the ones the bake records, so you can aim at a shipped bed's numbers.
The join
A bed has to run into itself. Play it round three times to hear whether it does, or sit on the join alone.
The weather over it
A gesture is what happens to a bed while it plays: a gust that comes round, a lull that takes it away and gives it back, a fire settling. At rest there is none, and the bed is exactly what the engine renders.
The knobs
Every knob the engine carries, in the groups the engine names them by. A slider you move takes the ink and is sent as your value; double-click it to give it back to the preset.
Keep it
The recipe below is the shape the game's own catalogue accepts for a bed, so a sound made here can be pasted in and baked as it stands.