Denom  X      X    This pair of parameters allows frames</span>
0098 <span class="comment">%                                   per second to be specified as a</span>
0099 <span class="comment">%                                   rational number.  Either both or</span>
0100 <span class="comment">%                                   neither parameter must be given.</span>
0101 <span class="comment">%</span>
0102 <span class="comment">%     framesPerSecond_num           Alias for fpsNum, fpsDenom pair.</sp