Quadrax with the Qx is fun...you can cascade envelopes!
Note the EOR and EOF markings. What those do is to output a trigger on either the End Of Rise or End Of Fall for each one of the Quadrax EGs. So if you wanted to create overlapping tesselations, you'd connect the EOR1 to TRIG 2 and so on until you got to the fourth EG, and that's where the use of the Qx would stop here. The result is that every time an EG's attack hits the endpoint, a trigger fires the next EG, and so on down...a ripple of envelopes!
Now, with the EOF, this is how you turn this thing into the LFO from hell! Like above, connect EG1's EOF (the end of the envelope) to the TRIG2 in, and keep on going! Then when you get to EOF4, connect that to TRIG1, and you get the most berserk LFO known to god and man, with CV control over eight different rise/fall segments!
But wait! There's MORE...the EOR/EOFs on the Qx can ALSO be used to fire any other trigger input...such as the two on the Maths, which allows you to do either release or decay modulation depending on whether you've sent the EOR or EOF of a Quadrax EG to a Maths trigger in. And there's definitely more trickery that the Quadrax/Qx is capable of...explore!