You know when you click in a cell and there is a dashed border around the active cell. Or when you click a column or row and it highlights the column or row. Or when you click in a cell and drag a bunch of cells and it highlights them all. I've lost the ability to do that. Let me rephrase... I can do it but I can't visually see that I've done it. I see no highlighting or shading or dashed borders or anything. I can't figure it out and I've tried looking in options and I've checked on the gridlines/cell borders/cell background... nothing is working. Any clues?