“…While in industrial practice manuals are still largely the most widespread tool supporting operators in the management of critical scenarios, such as errors, alarms and faults, it is nowadays well known that they suffer from a huge number of problems that make their use ineffective and inefficient in shopfloors (Crowder et al, 2003;Setchi and White, 2003). As a first improvement, the use of hypermedia information systems, usually named hypermedia maintenance manuals, industrial hypermedia applications or interactive electronic technical manuals has been proposed (Malcolm et al, 1991;Setchi and White, 2003;Crowder et al, 2003;Greenhough and Tjahjono, 2007;Fakun and Greenhough, 2002). These allow efficient information retrieval, thus facilitating the task-oriented structuring of information sources in technical manuals and the extraction of specific information.…”