# these two commands are equal :-)
$nav=CalcNavigation({Records=>100, From=>1, Count=>10, NextPages=>2});
$nav = {
    'Records'      =>   100,
    'From'         =>     1,
    'To'           =>    10,
    'Count'        =>    10,
    'Page'         =>     1,
    'Prev'         => undef,
    'Next'         =>    11,
    'Pages' => [
        { 'Page' => 1, 'From' => 1 , 'To' => 10 },
        { 'Page' => 2, 'From' => 11, 'To' => 20 },
        { 'Page' => 3, 'From' => 21, 'To' => 30 }
        ],
    'DefaultCount' =>    20,
    'NextPages'    =>     2,
    'PrevPages'    =>    10,
    };