{modulefield:slice_id:property}

Reads a property of a slice (or any module) by its id. The first argument is the slice id; the second names the property. With no second argument, or any unrecognized name, it returns the slice name. Recognized properties: url (the slice configured URL, empty when unset), charset (the slice character encoding, such as windows-1250 or utf-8), site_ids and site_id (the dash-separated ids of the sites the slice belongs to), and any slice setting field whose id begins with an underscore. It is the modern replacement for the deprecated slice command and for the older alias slice_info syntax. Returns an empty string when the slice id is missing.