I sure do wish I had 2013 to test this on but it apparently 2013 does not have (what they call slots) slots in the hole wizard. I did this in 2015 and used the hole wizard slot to come up with what is below. In my opinion a slot does not necessarily have to have rounded ends like an obround and I believe they should have the option of square corner for this tool but seems like they don't. Kind of silly. I used the HW slot tool and punched in the numbers to make them square or rectangular. I Made a couple of configs (with show or hide linked Display States) and added cut extrudes to show the slots with square corners (with relations to slots). When you edit the obrounds the rectangles and squares update with it. I know this is more work than it should be but it does work as you can see in the table. I will check this out in 2016 to see if they have added squares and rectangles to he HW. Life would be so much easier if they did.