runs xinclude processing on an xml file and outputs the expanded file
xinclude [ serialization options
Supports the standard [ serialization options
If "file" is omitted or if "-" is used as file then the standard input is used as the source file.
xinclude runs an xinclude preprocessor which expands any <xi:xinclude> elements to the included items, or fallback items as per the xinclude specification.
Returns 0 if the command executed successfully, 1 if there was an error.