Simon We are concerned about gathering enough mandatory metadata to be able to access a resource in the future. Therefore, we are particularly interested in the syntax for describing operating system requirements. In some cases system information is probably more important than individual type formats. System information should obviously reside in the DC. Format element. 1. Has there been any work done on this syntax? For example: <META NAME="DC.Format.System" CONTENT="IBM AIX 4.2"> 2. The problem we are trying to tackle is how to schedule an on-going viability/operability check-up of the various formats of our digital resources. This tail might help wag the dog as far as format syntax is concerned. Do you know of an intelligent tool that constant checks to see if formats in collections are still accessible? -------------------------------------------------- Simon Pockley - Cinemedia (http://www.cinemedia.net) 3 Treasury Place Melbourne Australia [voice] 61 3 96511510 ([log in to unmask]) -- Simon Pockley