- add append bit to handle headerAddOrAppendYetAnotherDatum method madness.
- add append bit to handle headerAddOrAppendYetAnotherDatum method madness.

devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5