Print this outline of the foldable 3D shape to help communicate faceted classification ideas, cut it out, fold and glue it together. The result should look like this.
The list of facets used for this shape may be a good starting point, but it is not authoritative, and you may need to adopt a different one to suit your particular situation.
Inspired by the talks by John O'Gorman at the Data Centric Architecture Forum in February 2020 and Leonard Will at the ISKO UK Meetup in March 2022.