The XNSMailUser df file provides a module which registers a command that allows one to store a retrieved xnsMail attachment (a serialized file on the local machine) to an xns File Server; then ViewPoint can make sense of the file on the server (a vpDocument), or a directory subtree will appear on the server (vpFolder), etc. The command has two forms:
Deserialize xns-file-server-directory-name ← local-serialized-fileName
Deserialize local-serialized-fileName
In the second case, the profile option XNSMail.DeserializeDir names the destination directory.