Tactile symbols for production on 2D and 3D printers

README file describes symbol sets and instructions for production. Remaining files are grouped by file type and zipped with a README file: 2D models - symbols, brushes, and swatches - as Adobe Illustrator Artwork (.ai) files, 2D graphics in Portable Document Format (.pdf), 3D models in OpenSCAD (.scad), and rendered 3D models as stereolithography files (.stl). Note that graphic content is covered by CC NC-BY-SA license, and scripts are covered by GPLv3.