removing the pencil lines

I looked at all the magic mixtures and the instructions to use a soft brush or cloth and realized that I would be working for several hours to remove all those lines so I bit the bullet, put the quilt in the washing machine with regular laundry detergent, checked it after the wash and found no pencil lines, so I put it in the dryer for a while and now it is 'good to go.' Just wanted to say it can be done.