Hi! New user here with a question about non-markdown second brain assets(!) I have only just started looking at Dendron but with its blend of hierarchical and graph methods for linking and organizing, it really grabbed my attention. But it has got me wondering: a second brain is full of all sorts of stuff, not all of which can be represented by mark down files. Images and pdfs are just two examples. Using the pdf as an example: as far as I can see, a pdf is somewhat of a second class citizen in Dendron. So it would never represent a node on the graph. I would have to create a md file with a link to get it included. I'm not saying this is wrong, I'm just wondering to myself, why is the pdf not afforded the same convenience as a markdown file to elevate it to first class citizen status? Would there be benefit in the dot hierarchy for naming pdfs? Would there be benefit in a pdf having inspectable back links? This thinking just came out of me wondering how best to deal with reference material that I want to store in Dendron. I found myself creating a ref-lib folder in my vault and dumping pdfs into it. Then I thought I might create a directory structure und ref-lib to bring some order. Then I thought, hang on, am I not defeating the purpose of using Dendron :)))) So, I guess my question is: what is the best way to track and store non-md stuff? (If I'm talking nonsense, please be gentle!)