Depending on your intent, "developing paper" from this pack likely refers to one of the following: 1. Papercraft and 3D Model Flattening (Pepakura)

: Users often download RAR packs containing 3D models (often .pdo , .obj , or .stl files) to "develop" or "unfold" them into flat 2D printable paper templates.

: If you have a RAR of this pack, "developing paper" may refer to extracting the original high-resolution scans or PDFs to recreate physical paper maps, tokens, and booklets for a campaign. 3. Industrial Packaging Design

If you see or .DWG : Use CAD software to generate a technical drawing for paper folding or CNC cutting.

: You would use software like Pepakura Designer to open the 3D model and "unfold" it, which generates the cutting and folding lines needed to build a physical object out of cardstock or paper. 2. Legacy TSR/D&D Adventure Packs