NA Enter in the frequency of darkened grid lines in this text box. If you would like some "guide" lines (no pun intended) on your grid, check this box, and enter in the frequency in the text box. Enter in the number of pixels (dots on the screen) apart that you want the horizontal lines of the grid to be. Enter in the number of pixels (dots on the screen) apart that you want the vertical lines of the grid to be. NA NA NA NA NA NA Click Cancel to discard the changes you have made in this dialog. Click Ok to accept the changes made in this dialog.