Back, Repeat, Skip and the timeline

These are always under the card:

• Back returns to the previous step. Its reading stays on the timeline; the new one, if you take it, is added.
• Repeat takes the current step again, for a reading you doubt.
• Skip moves on without a reading. On a step you have already read, Skip follows the branch that reading chose, so a fault is never skipped onto the in-range path by mistake.

The left arrow is Back, the right arrow is Skip and R is Repeat.

The timeline

At the foot of the column, the timeline lists everything that happened, newest first: questions and answers, confirmed power states, each reading with its verdict, notes, photos, the diagnosis. The last six show; Show all lists the rest.

Keys on the session screen

Key	What it does
Space or Enter	What the step needs next: Capture, Save reading, Next, Done, or the first answer. The key hint under the card says which.
Left arrow	Back
Right arrow	Skip
R	Repeat
1 to 4	Pick that answer on a question or inspect step
M	Mute or unmute the beeps
V	Tap to capture; hold to talk when voice commands are on (Voice commands)

The keys do nothing while you are typing in a field, so a typed reading never triggers a step.