Some tricks with Go's iota syntax.

anaminus.github.io/blog/posts/i...

Minimally compliant contrast ratios. Good for preventing afterimages. #CSS

Swapping two parts of a slice in-place.

Text is rendered by placing the left-most blue pixel of a glyph over the right-most blue pixel of the previous glyph. Using a baseline instead of boundaries for glyph placement allows glyphs to be spaced arbitrarily, and even drawn over each other.

Method for producing proportional bitmap fonts. The red component defines the drawable area for each glyph. Green defines the actual appearance. Blue defines the origin and spacing. Blank glyphs are skipped.