6CYANA: write cor - CYANA command

Parameters: file=<filename>.cor            (required)
            bfactor=<real>                 (default: 0.0)
            chains=<string>                (default: *)
            details
            all
            oldall
            connect
            append

Writes a coordinate file in DG (Distance Geometry) format. Optionally,
the output may be appended to an existing file.  By default, the
Cartesian coordinates of the current structure are written. The
covalent connectivities may be included, too. Optionally, the Cartesian
coordinates of all selected structures may be written.
