jQuery Grid Plugin - jqGrid

Hi, in the code below what does this line do? 

jQuery("#rowed3″).jqGrid('navGrid',"#prowed3″,{edit:false,add:false,del:false});

In this code below output has already been sent to the #rowed3 table but the statement above references it again.  What is the output?  Does it add another row to the table?

Here is the example link. http://trirand.com/blog/jqgrid.....grid.html#

<script>

var lastsel;
jQuery("#rowed3″).jqGrid({
   url:'server.php?q=2',
datatype: "json",
   colNames:['Inv No','Date', 'Client', 'Amount','Tax','Total','Notes'],
   colModel:[
   {name:'id',index:'id', width:55},
   {name:'invdate',index:'invdate', width:90, editable:true},
   {name:'name',index:'name', width:100,editable:true},
   {name:'amount',index:'amount', width:80, align:"right",editable:true},
   {name:'tax',index:'tax', width:80, align:"right",editable:true},
   {name:'total',index:'total', width:80,align:"right",editable:true},
   {name:'note',index:'note', width:150, sortable:false,editable:true}
   ],
   rowNum:10,
   rowList:[10,20,30],
   pager: '#prowed3',
   sortname: 'id',
    viewrecords: true,
    sortorder: "desc",
onSelectRow: function(id){
if(id && id!==lastsel){
jQuery('#rowed3').jqGrid('restoreRow',lastsel);
jQuery('#rowed3').jqGrid('editRow',id,true);
lastsel=id;
}
},
editurl: "server.php",
caption: "Using events example"
});
jQuery("#rowed3″).jqGrid('navGrid',"#prowed3″,{edit:false,add:false,del:false});
</script>