15. A method according to claim 14 further comprising constructing the diagnostic network model comprising: automatically reviewing a structured electronic representation of a document, wherein automatically reviewing comprises automatically identifying the plurality of symptoms and components and the causal relationships therebetween; and automatically constructing the network model of the plurality of symptoms and components and the causal relationships therebetween.
15. A method according to claim 14 further comprising constructing the diagnostic network model comprising: automatically reviewing a structured electronic representation of a document, wherein automatically reviewing comprises automatically identifying the plurality of symptoms and components and the causal relationships therebetween; and automatically constructing the network model of the plurality of symptoms and components and the causal relationships therebetween. 16. A method according to claim 15 wherein displaying additional information comprises displaying at least a portion of the document.