Based on a font that I made years back, this “Reverse” contest has been a good excuse to revisit that project and fine tune the letters heavily. Here the challange has been using a single brick, in the case the arrow pointing back, and making the shapes bold and (ok, you have to squeez your eyes a little) legible.This is a clone
I have made a font with International Maritime Signal Flags before, but this time they are coloured correctly (in grey scale). White is blank ( ), yellow is little dots (::), red is 33% diagonals (\\), blue is 50% diagonals (//), black is filled. Lower case letters are the patterns with no colouring, for those who want to colour in the fields themselves.
I have now added numbers. The regular numerals (0-9) are the square NATO flags, and the subscript numerals (₀₋₉) are the templates of the NATO number flags. The roman numerals (I-X, X representing 0) are the longer ICS flags, and the lower case roman numerals (i-x) are the uncoloured ICS flags.
On top of that there are four substitute flags, which can be found in the superscript numbers (¹⁻⁴) and the fifth fractions (⅕-⅘).