The PDF contains not just static pages, but zoom-dependent map layers – like a game engine inside a PDF. As you zoom in, the PDF dynamically reveals more detailed terrain, labels, and hidden annotations (using PDF’s optional content groups / OCGs or JavaScript).
Here’s an idea for Terra-infinita Pdf UPD (assuming it’s a PDF tool focused on maps, terrain, or infinite procedural landscapes): "Dynamic Layered Atlas" (Interactive, multi-scale PDF with procedurally linked terrain layers) Terra-infinita Pdf UPD