rewf
I sometimes cross my 7's and sometimes I don't. Habit I picked up from all those french classes. In one of my classes in college, I had to demonstrate this particular teaching method (forgot the founder's name). This classmate commented that I did it wrong because it looked like Vietnamese learning style. She noticed that I crossed my 7's. Duh....I started school in the states, don't even know how schools are taught in Vietnam.
I occasionally put a diagonal slash in zeros too.