@gabecolors @nickmilo I have this exact same question and came to the forums to find the answer. When I searched for “000” in the LYT kit, it looks like it is an “alias” for the Home note now. (I’m fairly new to Obsidian, so I’m not sure what this means exactly).
In the LYT Kit, perhaps he’s using classification in a more subtle way, akin to metadata? I’m wondering if this is an intentional simplification of his system so new users don’t get bogged down; or if, instead, it’s a reflection in changes to his personal practice.
I’m a MLIS student/librarian and found this post very appealing: Cataloging, Classification, Information Science, PKMs and YOU! I was hoping to find more discussion about a modified UDC or other similar classification.