public void RemoveElement( 
   HtmlElement element
)

public static int Execute(Instance instance)
{
    instance.ClearCookie();
 
    Tab tab = instance.MainTab;
    if ((tab.IsVoid) || (tab.IsNull)) return -1;
    if (tab.IsBusy) tab.WaitDownloading();
    tab.Navigate("lessons.zennolab.com");
    if (tab.IsBusy) tab.WaitDownloading();
            
    Document doc = tab.MainDocument;
            
    HtmlElement he = instance.GetTabByAddress("page").GetDocumentByAddress("0").FindElementByAttribute("input:checkbox", "fulltag", "input:checkbox", "text", 0);
 
    doc.InsertElement(he);
            
    doc.RemoveElement(he);
            
    return 0;
}

public static function Execute($instance)
{
    $instance->ClearCookie();
 
    $tab = $instance->MainTab;
    if (($tab->IsVoid) || ($tab->IsNull)) return -1;
    if ($tab->IsBusy) $tab->WaitDownloading();
    $tab->Navigate("lessons.zennolab.com");
    if ($tab->IsBusy) $tab->WaitDownloading();
            
    $doc = $tab->MainDocument;
            
    $he = $instance->GetTabByAddress("page")->GetDocumentByAddress("0")->FindElementByAttribute("input:checkbox", "fulltag", "input:checkbox", "text", 0);
 
    $doc->InsertElement($he);
            
    $doc->RemoveElement($he);
            
    return 0;
}