#2 support for reaction arrows and plus sign

open
nobody
None
5
2009-05-30
2009-05-30
Uwe
No

I want to draw a chemical reaction, but cannot find a way to draw a reaction arrow nor a plus sign.

When you implement this, it would be nice when the arrow can be labeled like e.g. in this reaction:
http://upload.wikimedia.org/wikipedia/commons/f/fe/Amide_hydrolysis.png

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