An oas file extension is related to the Fujitsu OAS document format. Probably obsolete format.

There is one other file type using
the OAS file extension!

empty icon.oas - Microsoft Outlook Attachment Sniffer data

Detailed description

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OAS file extension - Fujitsu OAS document

What is oas file? How to open oas files?

File type specification:

Document file type icon Document file type

The oas file extension is also used by some Japanese word processor for its  document file format (Fujitsu OAS).

Most likely some old format without support. No further information could be found.

MIME types:
application/vnd.fujitsu.oasys

This oas 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.

Help how to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:

As far as we know, this .oas file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

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