30 March 2009 at 1:03pm
$Breadcrumbs is a function in sapphire/core/model/SiteTree.php which returns the breadcrumbs trail. $Variable is either a function in the model/controller or a field attached to the current page or one of its decendents.
To use the login form simply add $LoginForm to your template. To style it you might want to wrap it in a div with a unique ID so that you can easily target the elements in that specifig login form.