The 4 corner positions on the grid are highlighted with larger squares, and these are the Lock and Load positions. The Lock and Load feature triggers when you land 2 matching symbols in the diagonally opposite corner positions, and this transforms all symbols on the diagonal line between them into the same symbol as the triggering symbols.The diagonal line of matching symbols becomes locked for a respin, and winning symbols become locked. This repeats as long as you keep winning. If all 4 corners are active in the Lock and Load feature, the center position where the 2 diagonal lines intersect turns wild. Any locking line symbol that becomes part of a win also turns wild, and your achieved Lock and Load multiplier is applied as the feature ends.