• Open up the structure in WinGX (in this case the ladd5c structure from Marcus Bond's web site).

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• Call up ORTEP3 via the Graphics, ORTEP3 command. In ORTEP, open up the required file.

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• Choose the packing and orientation you would like to render.fs

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• Choose the packing and orientation you would like to render. Then write out a Raster 3D file using File, Write RASTER 3D File

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• Going back to WinGX, enter the RASTEP menu system by Graphics, Raster3D, RASTEP

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• Enter the options you require (Calculate Shading and GoldenRod colour for bonds are my favourites) and then decide what resolution you want to render a TIF file as (640x512; 1280x1024; 2560x2048)

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• A RASTEP output window will then tell you what happened, ready now to actually RENDER the TIF.

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• Now to render the TIF, file run Graphics, Raster3D, RENDER

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• This produces a raster3d.tif which can now be viewed using the Graphics, Raster3D, View TIF File option (if this has been setup in the WinGX File, System, Setup, System2 menu system). In the following screen view, the lview software from www.lview.com has been linked into WinGX.

  Note: Because GIF files are only 256 colours, the original rendered TIF files look of much higher quality

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Examples of Files Produced (note these are compressed JPG files so resolution may have degraded over the original TIF files):

• Ladd5c - UNIT CELL Pack - low Resolution 640x512 JPG - 40kB
• Part of Ladd5c - UNIT CELL Pack - high Resolution (was 2560x2048) JPG - 73kB
• TetraCycline Molecule - low Resolution 640x512 JPG - 17kB
• Part of a TetraCycline Molecule - high Resolution (was 2560x2048) JPG - 45kB