It is also possible to use 'Set requests' at the same time as 'Read contents', due to a little bit of magic self-subtraction of the circuit network signals.
you are talking about being able to set requests and read the contents due to magic self-subtraction.I hope this gets also added to train ...

1. We are SO CLOSE with fixing "custom minimum payload", but waiting only for bots currently delivering things creates a weird disparity between rockets fed by bots and rockets fed by inserters. Rockets will still launch prematurely if inserters are actively loading them when they reach the minimum ...