On 6/20/13 8:27 PM, Jonathan Duncan wrote:
[log in to unmask]" type="cite"> Steve what do you mean by unordered symbols? Aren't we using the order of the symbols to maintain which ones are drawn first so that we can maintain overlapping?

Hi Jonathan,

Very true.  Order does matter with overlap and should be respected. 

The symbols are positioned one at a time from first to last.  Early symbols can be obscured by later symbols.

I guess using the term unordered isn't exactly correct.  I was trying to say don't read too much into the order of the positioned symbols.  Matters of overlap are very important, but other than that, there is no inherent meaning in the order.

With the sign referenced, there is no overlap, so the following 6 strings are equivalent.