RDDL: new version, natures updates

In light of the recent discussion, perhaps it was premature to change  
the natures document http://www.rddl.org/natures

I have reverted this to the old version.
The new version is at: http://www.rddl.org/natures-new

For discussion purposes.

Does anyone have any objections to the proposed syntax at: http:// 
www.rddl.org/20050704 ?

Jonathan