Description
The template should contain at least the {title} placeholder, can also contain  {url} placeholder.
     Default templates are:
array(
    HTML_MENU_ENTRY_INACTIVE    => '<a href="{url}">{title}</a>',
    HTML_MENU_ENTRY_ACTIVE      => '<strong>{title}</strong>',
    HTML_MENU_ENTRY_ACTIVEPATH  => '<a href="{url}"><em>{title}</em></a>'
); | 
If custom keys are present in the original menu structure, they will be assigned to the corresponding placeholders.