I frequently use tables in Word; however, I NEVER use the default borders around each cell. Occasionally I will use a border beneath the header row, or perhaps a single line under a column of figures, with a double line under the total. In essence, when I do want borders (rarely), they are custom borders that I apply as needed. It is a major pet peeve to have to undo borders every time I create a table.
How do I change the Word defaults so that my new tables are created without borders?