Typologies of traces of use identified from a previous project called From the Books, which explored books from the 000-099 section of the Redmond Barry Reading Room in the State Library of Victoria.
These formed a loose classification system that indexed these books not by bibliographic reference, but by the frequency of occurrence, taking a "bag of words" approach. Problems that arose were linguistic - it was difficult assigning a word to an example as this already had some assumption of intention (e.g. a doodle as an intentional drawing vs squiggle as unintentional drawing).
My approach was one of identification based on nouns, which presented problems in describing the traces we found and the possible intention (or lack of intention) in their making. To what extent could the noun communicate what had happened? Nouns point towards things affected by actions. In a sense, to name something is to own it, and things become property much more easily than actions.