  We put forth a few ideas on coordinate conditions and their implementation in
numerical relativity. Coordinate conditions are important for the long time
scale simulations of relativistic systems, e.g., for the determination of
gravitational waveforms from astrophysical events to be measured by LIGO/VIRGO.
We demonstrate the importance of, and propose methods for, the {\it active
enforcement} of coordinate properties. In particular, the constancy of the
determinant of the spatial 3-metric is investigated as such a property. We
propose an exceedingly simple but powerful idea for implementing elliptic
coordinate conditions that not only makes possible the use of complicated
elliptic conditions, but is also {\it orders of magnitude} more efficient than
existing methods for large scale 3D simulations.
