What do you mean by the initial letter on javascript variables/functions

Question

The code below is just an example, this code is from jQuery DataTable. I just would like to know what is the meaning of "o" in oTable, "b" in bServerSide and the others. Are they holding some kind of meaning?

  var oTable = $('#unis').dataTable({
    //"bProcessing": true,
    "bServerSide": true,
    "sAjaxSource": "index.php?...&<?php echo JSession::getFormToken() . '=1' ?>",
    "sDom": "<'row-fluid'<'span6'T><'span6'f>r>t<'row-fluid'<'span6'l><'span6'p>>",
    "sPaginationType": "bootstrap",
       "aoColumns":[
                {"bSortable": false},
                {"bSortable": false},
                {"bSortable": true},
                {"bSortable": true},
                {"bSortable": false},
              ],
    "oTableTools": {
    "aButtons": [ "delete selected", "export" ]
}  

});

Answer 1

Those prefixes refer to the datatype of the variable:

b = boolean
s = string
o = object
a = array
ao = array of objects