chalk

White dustless chalk, sans poussiere, twelve of them, non-toxic, good for school, house or outdoors, if someone gave you a piece of chalk and pointed to a surface, what would you write or draw? The writing is on the wall. What kind of marks do you leave on the sidewalk as you walk down the street from one milieu to another? White as a ghost dustless chalk could be rubbed out with a sleeve, chalkboard brush, rag or even the back of the hand.