[jolmg]

> doesn't that create a new symbol which look like completed upon glancing?

Well, not if you make your diagonals hit the corners and your verticals/horizontals hit the sides/top/bottom. In ASCII, they look like they're contained inside, but I actually make the lines cross the box border. For multiple contiguous items that I'm moving, I may even just make a single line to cross multiple boxes. I'm trying to reduce over-committing, though.