To keep your Doc-To-Help project settings in an XML file that you can modify and use in any project, you must first export your project settings to XML using the Project Settings Export Wizard. Any changes you make manually to the XML file must conform to the XML schema Doc-To-Help uses to validate the file. This schema file is named "c1d2h.xsd" and is located by default in the C:\Program Files (x86)\MadCap Software\MadCap DocToHelp 6\ directory. Storing project settings in an XML file makes it possible to automatically modify Doc-To-Help projects.