Please be more specific. It is not clear
- what your goal is,
- what exactly you are doing (export how, from where, to where, for what purpose?) and thus,
- what the actual problem is
- … or how it relates to this thread (which is not in the DEVONthink To Go category)
While a thumbnail is generated on iOS, it doesn’t seem like you can preview an .ooutline file like with QuickLook on the mac. So you can’t “open it” directly in DEVONthink To Go. However, you can open it from DEVONthink To Go in OmniOutliner. Tap the share button and choose OmniOutliner. Or you can access your .ooutline files stored in your database from within OmniOutliner if you add DEVONthink as a Location in the Files app.
You could always try to search for “omnioutliner” in the DEVONthink To Go Category…
Where you will find this thread:
If you want to view your OmniOutliner files directly in DEVONthink To Go, you should probably convert/export them to a compatible format like PDF or HTML. I also remember someone somewhere writing an Omni Automation script for exporting to markdown, but I have never played around with omni scripts.