SIDE EFFECT: continued line causes first segment to disappear....
attempting to use Classroom in a Book - page 170, pencil tool "an X will appear next to pencil tool"....not so..
at one point, i DID see the "X" but can't reproduce it now that i backed up and started over. I get an asterisk,
then, when drawing a line, and adding to it, the first line disappears as soon as the second line is drawn.
Book, tutorials, and help do not address the issue, yet....