Quick pulse-width question

[Timo]

Think I'm missing something here, but how can you control the pulse width of a Saw wave as easily as you can with the Square wave? The pulse-width knob control only comes in effect when using the square/pulse waveform only? I understand the knob, after turning it anti-clockwise from 12'o'clock, selects the spectral wave for that oscillator. However, I'd like to be able to affect the PW of the saw wave too (and/or the spectral waves as well, although I would understand this would be considerably trickier, if indeed at all possible, although most likely not).

Thnx,

Timo