Black or dark stools are a common side effect that may be the harmless result of unabsorbed iron. Whether you are taking iron supplements alone or a multivitamin with iron, you may experience this. Check with your doctor or healthcare provider to find the cause of black stools.
CCYYMMDD is just yyyyMMdd. The CC is for the two digit century which is the same as the first two digits of the year. I think people do that because people see yyyy and still type 12 instead of 2012. So today's date would be 20120717.
A .drw file is a drawing file saved in vector format, which uses lines instead of dots to form images. This is a file type common to several drawing programs. A .dxf file is an AutoCAD drawing file format meant to be compatible with other programs. The .drw file format can be converted to .dxf with the VaryView ...