The ADSR Generator module is a very versatile envelope generator. It can function as an AR generator via the TRIGGER output or as a full ADSR input when using the GATE input.
Using the two together allows for re-triggering. Through the Fast/Slow switch you can control the overall timing as a whole, with the time in Slow mode 10 times longer than in the Fast mode. An AR envelope can be triggered via the LOCAL switch.