RMenum  rmiWriteJPEG(const char *filename,
                      int quality,
                      const RMimage *toWrite)

 const char *filename - the name of the file to be written. int quality - integer value that controls degree of lossiness in
 JPEG file. The value of quality ranges from 0-100, with 100 being
 the least amount of loss, and smaller numbers producing increasing
 amounts of error. Smaller numbers result in smaller output file size. const RMimage *toWrite - the RMimage object that will be written
 to the file in JPEG format.

 RMimage *rmiReadJPEG (const char * filename)

 const char * filename - a character string, the name of the file
 containing a JPEG image to read (input).