HydraExpress reads any file of any name that contains supported project file options. This ability provides a great degree of flexibility while generating code.

The advantage of this feature is that, for instance, if you want code to be regularly generated using a particular option, you can create an XML file specifying that option and provide it as an argument to the generator. The code generator uses the options contained in any such file to generate code, and then merges these options with the HydraExpress project file it generates.

For example, if you want to always generate code with the -whitespace and -sourcepro options, you could create a HydraExpress project file titled standard-properties.xml. If you used this as an argument to the code generator, you would not need to specify these options on the command line.