[NTG-context] OT: Tetris & Doom ported to PDF

Apparently, the PDF engines of Firefox and Chrome support enough JavaScript to play Doom (in 6 grayscales): https://github.com/ading2210/doompdf or (much easier) Tetris: https://github.com/ThomasRinsma/pdftris That might mean we could check support for presentations fetures (OCGs?) again. “C code can be compiled to run within a PDF using and old version of Emscripten that targets asm.js instead of WebAssembly.” Hraban