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MarvinSketch is one of tools of the Marvin which is a poweful & cross-platform collection of Java tools for drawing, displaying and characterizing chemical structures, substructures and reactions. It has a rich (and growing) list of editing features, is chemically aware and is able to call ChemAxon’s structure based calculation plugins for structures on the canvas.If you often need to draw chemical diagram,I strongly recommend MarvinSketch to you.

Download(requires register) :http://www.chemaxon.com/marvin/download-user.html

see more about MarvinSketch or Marvin :http://www.chemaxon.com/product/msketch.html

Easy PDF editing is coming to OpenOffice.org, but you’ll have to be patient for a few months. Recently posted to the OpenOffice.org Extensions site, the Sun PDF Import extension (SPI) is only in beta, and only works with recent developer builds of OpenOffice.org 3.0, which is scheduled for September release. Right now, the quality of the final release is anybody’s guess, but the beta’s capabilities fall squarely in the middle of the available PDF import tools.

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