FlowStepper.Progress in the shell's header and FlowStepper.Actions in its footer, and both follow one useFlow.type="bar" on FlowStepper.Progress to show a filling bar in place of the step titles.skip: true to leave it out of next, the progress and the count.extra to put a Start over button between Back and Next, and a FlowStepper.Back as back to relabel it.