#FORMULAIRE_ADMIN tag (since SPIP 1.5) is an optional tag which allows you to insert the administration buttons ("recalculate this page", etc.) into your own templates at a location of your own choice. Whenever an administrator is viewing the public site, if this tag is included in the relevant template file, it will be replaced by the administration buttons. If it is not explicitly included in the template file, then these buttons will be inserted at the end of the HTML code. Note that this does not mean that the buttons themselves appear at the bottom of the rendered HTML page, as they can be styled to be located in another position (as they are by default).