Re: z-index property

Stephen Deach wrote:

> Also, is there an implied drawing order if 2 items with the same z-index
> overlap? or may they be drawn in any order. (Many existing formatters do
> this in differing orders, it may be hard to enforce, but might be useful to
> suggest an ordering.)
I believe it's defined in 4.9.6:
"If A and B are areas with the same stacking layer, the backgrounds of A and B 
come beneath all other marks generated by A and B. Further, if A is an 
ancestor of B (still with the same stacking layer), then the background of A 
is beneath all the areas of B, and all the areas of B are beneath the 
intrinsic areas (and border) of A.

If A and B have the same stacking layer and neither is an ancestor of the 
other, then it is an error if either their backgrounds conflict or if a 
non-background mark of A conflicts with a non-background mark of B. An 
implementation may recover by proceeding as if the marks from the first area 
in the pre-order traversal order are beneath those of the other area."

-- 
Oleg Tkachenko
eXperanto team
Multiconn Technologies, Israel