Can extended attributes be attached to arbitrary files?

[BiPolar]

While you wait for better answers, perhaps youll find the following of interest (also note the use of custom colums in Tracker on the first screenshot):

**ANNOUNCEMENT** SEN + Personal Knowledge Graphs Book featuring Haiku

After one year of work (on/off writing, researching, refining…) it is my pleasure to announce what is maybe the first book to feature Haiku outside of the core audience, which has been released today: Personal Knowledge Graphs I am using Haiku as the foundation for my project SEN (Semantic ExteNsions) to integrate semantic extensions into a desktop OS using a files-as-entities metaphor (following a data-centric approach, just like the original BeOS did with e-mail and people “files”) and the f…

Edit: BTW, welcome to the forum @gormilind!