- Press "Start/Stop" to toggle trapping keyboard events. (Default is off.)
- Use the arrow keys (⬆︎,⬇︎,⬅︎,➡︎) to navigate.
- "Reset" will put the grid back to its default, initial state.
Right now, Live View does not handle repeated key events. For something
like this, however, you need to fire the same key — say,
⬆︎ — repeatedly to keep going up.