Now that's an intriguing concept. "A file format for declaratively specifying a physical data-communication artefact, abstractly-defined by the interactions it supports."
• Just showing the user text? Compiles to plaintext.
• Get the user to give some input? Compiles to a styled form, as PostScript.
• Add radio buttons? Compiles to a physical form but with a 3D-printed notched slider glued to it.
• Require validation for freeform-text form fields? Compiles to a 3D-print + VLSI + pick-and-place specification for a tablet embedded-device that displays the form and does the validation.
Now imagine a "printer" that takes such abstract documents as input, and can print any of these... :)
Maybe if you bury the page deep within a forest, so the compiler could hook into the distreebuted CPU cluster in order to facilitate more effective computation.
