I go to the "Everything's a Dollar" store and buy packs of the washable marker pens--maybe a dozen in a pk. They wash away beautifully. I sometimes mark the front, sometimes the white back all over. Never have a problem with washing completely away. But I like my quilts better after they've been lightly washed--some people want the 'new' look. However, if you use glue to join the layers, you have to wash anyway. That is my "menu".