wfdesc:Artifact is used to provide information about a class of artifacts. For example, it can be used to specify the datatype of a dataset or the structure of a document. An wfdesc:Artifact is associated with a wfdesc:Parameter using wfdesc:hasArtifact. The distinction between a parameter and artifact is that the parameter can be customized to describe the particular role the artifact plays with regards to the process (and can be linked using wfdesc:DataLink) - while the wfdesc:Artifact can describe the syntactic and semantic datatype.