An xdw file extension is related to the Milinta Cross APL Transfer functions. Probably obsolete file format.
There is one other file type using
the XDW file extension!
.xdw - DocuWorks document
XDW file extension - Milinta APL transfer function
What is xdw file? How to open xdw files?
File type specification:
The xdw file extension is associated with the Milinta Cross APL Transfer functions.
The transfer functions in workspace 'xfrpc' allow transferring objects, workspaces and files between major APLs. The .xdw file stores Dyalog APL Workspace.
This xdw file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.