Component : an ACS component is made with zero, one or more little parts of SPIP templates with an administration user interface.
 Models : an ACS model is a SPIP templates set (a templates directory) with ACS components.
 Nut : a nut is a small SPIP template part.
 Pencil : little icon of a pencil to edit components from public pages of the website.
 Template : pages are made from templates which formats contents read in database.