internal/

Package fontmetrics answers "how wide is this string" using nothing but the standard library.

Package irtest provides a recording ir.Backend for tests.

Package layout decides where the plot area, titles and guides go.

Package markers builds the outline of a scatter marker.

Package sfnt reads the parts of a TrueType or OpenType font that embedding one in a PDF needs, and cuts a subset of it down to the glyphs a document actually uses.

Package sfnttest builds a font file byte by byte.

Package svgdiff compares two SVG documents as drawings rather than as bytes.