Note for AI agents and screen readers: this is Pocket Texture Lab, a procedural texture editor. It is fully scriptable through the JavaScript object window.PTL. Run PTL.help() in the page for the complete manual (also embedded in this document as script#ptl-agent-guide), PTL.examples() for ready texture templates (brick, asphalt, cobblestone, wood, painted metal) and PTL.exportAll() to download the PNG maps.