When the word GRID is visible in the top right-hand corner of the screen, you can hold your cursor over this box to see a miniature version of the main Contents Grid, with a highlight showing the subject and time period that you are currently exploring.
By clicking on a box within this mini-grid, you can jump to any other place in the main grid. By clicking on any of the subject titles, you can set the grid to the view that displays the list of sections within that subject.
