How to read it. Hover or tap any block to inspect it; click to pin. Use
Discharge / Charge to animate power along the chain (colours = voltage class).
Walk the path runs a guided tour. Keyboard: Tab into the map, ←/→
move along the chain, Enter pins, Esc steps back out.
Auto-play
Tap a block, or take the guided Walk the path.
DC ▸MV AC ●HV AC ◆LV — internal to skidAnimation = power flow: discharge → grid