_NAME_
writeHeader

_PROTOTYPE_
void writeHeader(int fd, int dataTypeID);

_SHORT-DESCRIPTION_
Write data archive file's header

_DESCRIPTION_
writeHeader is used for writing the 32 byte header present at the
beginning of every data file in the archive.  See
<A HREF="dataFileHeaderDefinition.html">header description.</A>

_INPUT_
* fd is the file descriptor for the already opened-for-write data file. 
* dataTypeID is an ID for the data type to be written to the file.
These IDs are defined in the C header file FileTypes.h. 

_OUTPUT_
* None. (A 32 byte header is written at the beginning of a data file.)