Oscillator / Waveshaper
Stacked detuned saw oscillator. The second argument controls spread or detune; small values are gentle, larger values make broad trance-like pads.
Detune/spread is usually small: 0.01 to 0.35. Larger values sound wider but less tuned.
supersaw(X, 0.18+0.35*param(3))
For pitched oscillator functions, X already contains the current MIDI note pitch and transpose information. Prefer saw(X), sin(X), or pwm(X, 0.4) unless you intentionally want an octave or ratio shift such as 0.5*X or 2*X.