US Patent 7657832 Correcting validation errors in structured documents

Computer-implemented methods and apparatus, including computer program products, implement techniques for validating and correcting structured electronic documents. The techniques include identifying a structural aspect of a structured electronic document that fails to conform to rules of a markup language format. One or more changes are suggested that would correct the identified structural aspect. User input is received selecting a change of the suggested changes. The selected change is applied to the structured electronic document. The rules are associated with the structured electronic document.