odd coding

odd coding

Can anyone tell me what the following code does? I'm fairly new to Jquery and have trolled the internet and tutorials but with little success :-

 $(this).children('table.grid').each(function(table_index) {
            $(this).find('tbody tr').dblclick(function(dblclick_event) {
                $('td.link a', this)[0].click();
            });
    });

Any help greatly appreciated