A very interesting concept colliding with a very interesting, albeit dated, tool! The linear nature of the Hypercard system comes at odds with the Zettelkasten method, which leads to something more akin to the non-digital, spatially-limited implementation than a pure conception of the Zettelkasten. Charming and easy to use. Easy to understand. It calls into mind the nostalgia of skeueomorphic design, really establishes the Hypercard as, yes, a stack of cards. Thank you for submitting!