crossing your sevens

[Slothy]

If you have to cross your 7s in order to distinguish them, you need to write better.

I don't cross Zs or 0s either, but at least I can see a basis for that.

This man knows what he's talking about. Although I disagree about seeing a basis for crossing Zs unless you make your 2's as written on a keyboard rather than with the loop at the bottom. In which case the problem is still needing to write better.