Select the flow service and do a right click. You will find an option “View as HTML” or “Generate HTML” it will show you the service level comments, inputs and outputs, mapping from input to outputs including the transformers.
And also there is a package WxDoc which is not included as part of SAG webMethods product suite. You can contact SAG GCS team to know more about this package. But note there is a cost involved.
If you read the flow.xml on your IS file system you can build a utility service to parse this file and generate the file of your format.
Let me know if you have any questions.
#webMethods#Integration-Server-and-ESB#Flow-and-Java-services