The present document provides: 1) Guidance on expected usage of PAdES signatures for securing PDF documents. 2) Guidance on the implementation of PAdES requirements. Readers should note that this is not a normative document@ but an informative one. As such@ no mandatory requirements are specified in the present document@ but recommendations and suggestions on what authors of the document think that a correct usage of PAdES would be@ and also details and recommendations that might be useful for PAdES implementers. NOTE: These guidelines includes information collected derived from the ETSI PAdES FAQ web site at the time of publication. Further details and more up to date information may be found by reference to the web site at www.padesfaq.net