Content Pipeline Guide > Content Pipelines > Composer Configuration Files > Creating a Simple CCF File > Interface element
  
Interface element
The Interface element exposes pipeline parameters to the composer API. An Interface element can incorporate Label, Documentation, and Parameter elements.
<Interface>
<Parameter name="document" idref="epicGenerator.docId"
required="yes"></Parameter>
<Parameter name="output_filename"
idref="fileSerializer.outputFile"
required="yes"></Parameter>
</Interface>
The composer in this example has two parameters, the document ID and the name of the serialized file. The Parameter names are exported as composer parameter names. These composer parameters get mapped to the filter parameters.