display link usage

hello experts,

     IPNCRDK and DVRRDK

     I found the following structure in  DisplayLink_CreateParams

     System_LinkInQueParams inQueParams[DISPLAY_LINK_MAX_NUM_INPUT_QUEUES];
     /**< Display link input information */

     and 

     #define DISPLAY_LINK_MAX_NUM_INPUT_QUEUES        (2)

     I'm looking for examples (inQueParams[1] of displayPrm) as below

displayPrm[1].inQueParams[0].prevLinkId = swMsId[5];
displayPrm[1].inQueParams[0].prevLinkQueId = 0;
displayPrm[1].inQueParams[1].prevLinkId = swMsId[4];
displayPrm[1].inQueParams[1].prevLinkQueId = 0;

     Is there restriction for using this component? Or could you provide a reference about the above?

Thanks