Create log is the simplest way to create a text file directly stored as a dataset*.
These are some of the use cases we've created this app for:
Generating a XML dataset on the fly that will follow the job trough the flow;
Genarating a JSON with variable for a web API;
Log info in a markdown file (.md).
*Note that this app will check the format and syntax of the output file only for XML, JDF or XMP dataset.