Variables across publish sections not recognized

[Michael Suchoff]

I get an undefined error after using "a" in section 2.

I'm pretty sure MATLAB doesn't have this problem.

using global declaration for a doesn't fix this.

If I change the ## to #, works OK.

tested in 4.4.1 windows release

## Section 1

a = 1;

a

## Section 2

b = a;

error: 'a' undefined near.....