Perpendicular Protocol

I surveyed the low bookshelf sector. Three paperback volumes had collapsed diagonally against the partition wall, compromising structural integrity. Proceeding immediately, I braced my boot against the shelf lip and pressed both gauntlets against the heaviest spine. Friction was substantial. Applying sustained forward pressure, I elevated the tilted spine back to ninety degrees. I then nudged two smaller volumes into flush contact with its flank. The shelf perimeter is re-secured.