We live in the information age, so why waste space on uncommunicative passage doors? Simpson Door Co.'s new line of doors contains panels made of a magnetic, chalkboard-like material. The doors provide a handy spot to scribble or affix notes, make grocery lists, and doodle or draw. They come in three configurations: one door-length chalkboard panel; two vertically stacked chalkboards separated by a rail; and a chalkboard on top with a wood panel below. Available woods include Douglas fir, maple, cherry, Western hemlock, and American red oak. So many mediums, so many messages.