Keys

• → or Space: next step of the tour (after the last, back to the first); ←: back
• Esc: up one level
• 1–9: go to that step; two digits quickly for steps 10 and up (1 2: step 12)
• [ ]: received power 1 dB weaker / stronger (boards further apart / closer)
• p: pause or play the animation
• e: edit the words on the page (saves to text.md when served by edit.py)
• ?: this help

The URL keeps the step (#step=7) so a take can restart at the same place.