What a plan's parameter marking decides A plan marks each parameter holding channel names as either movable, meaning the plan drives it, or readable, meaning the plan only records it. That single marking is read by four independent consumers: the validator's stand-in devices, the pre-queue channel check, the approval prompt shown to the human, and the default plot's x axis. your plan file says it once, outright parameter marking movable — the plan drives it readable — it only records it the validator which stand-in devices to build for the rehearsal the pre-queue check which names are checked against your machine the approval prompt what the human is told is about to move the default plot which channel becomes the x axis each of these used to guess from how a parameter was spelled — now they all read the same answer