exa/ls47/ls47.scad, branch master hand-computable low-tech cipher tiles https://git.e-x-a.org/exa/ls47/atom?h=master 2026-10-29T20:59:11Z a bit of a clean-up 2026-10-29T20:59:11Z Mirek Kratochvil exa.exa@gmail.com 2026-10-29T20:59:11Z urn:sha1:a57b23e308bb5dd0846ad977dbf931aeef8ed42f