Hi,

I've modified orp and XSLT to support z-mode and z-index. What they
are for is described here:
http://wiki.openstreetmap.org/index.php/Osmarender/NewFeaturesProposal

Now I'm trying to modify stylesheets to actually use it. However I
have a problem with <area> instructions. Currently some <area>
instructions have layer="-5", others don't. In my opinion almost every
<area> should have layer="-5", except highways. Unfortunatelly setting
layer="-5" or z-mode="bottom" in current implementation removes layer
information.

What should I do about it?
- Use z-mode="bottom" for almost every <area> instructions as layers
are used rarely on areas anyway.
- Modify z-mode="bottom" to use layers. Layer 5 in z-mode="bottom"
will still be bellow layer="-5" in z-mode="normal"
- Introduce other z-mode values like z-mode="bottom" (really bottom,
no layers) and z-mode="bottom-layered"
- Keep it as it is now. Why it's not a best idea is visible for example here:
  http://www.openstreetmap.org/?lat=49.76321&lon=13.06208&zoom=17&layers=0B00FTF
- Something else...

--
Jiri

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