Shrinking a selection
In ESP, hold Ctrl and tap an arrow key to trim your current selection by one row or column. The cells drop off the side opposite the arrow, so the selection closes in toward the direction you pressed.
For example, with a block of cells selected, Ctrl + Right removes the leftmost column and leaves the selection one column narrower. Tap it again to lose another column.
Clearing the whole selection
Press Ctrl + Space to deselect every cell in the table at once.
Why it's handy
When you're adjusting a region of the fuel or ignition map, it's common to grab a little more than you meant to. Trimming it from the keyboard is quicker and more precise than redrawing the selection with the mouse, especially on large tables where the edge cells are hard to hit.
For the rest of the table shortcuts, see selecting cells, increasing and decreasing cell values and the full keyboard reference.
