NOTICE

Third-party attributions
========================

This project includes work derived from the following upstream projects.

MusiXTeX / musixmf font
-----------------------

The 17 music-notation glyphs embedded as 1bpp bitmap arrays in
sted2-2.07m+20010303/sted2/sub/xwin_graph.c are derivatives of
renderings from the MusiXTeX package's musixmf font: treble/bass clefs
(character 9 & 27 range), note heads (chars 7, 8, 9), the augmentation
dot (char 0), upstem flags (chars 40-43), rests (chars 60-66), and the
sharp / flat accidentals (chars 52 & 50).

- MusiXTeX package: https://ctan.org/pkg/musixtex
  Distributed under the LaTeX Project Public License (LPPL), which
  the Free Software Foundation classifies as GPL-compatible.
- musixmf font: part of the musixtex-fonts distribution, derived from
  Donald E. Knuth's Computer Modern typefaces (Knuth-license
  compatible).

The extraction pipeline that produced the bitmaps (tools/
extract_clefs.py, tools/extract_notation.py) and the source PNGs are
kept out of this repository via .gitignore; only the resulting 1bpp
byte arrays live in the tracked C source, alongside comments that
identify each glyph's musix20 character code and anchor rule.

STed2 upstream
--------------

See LICENSE for the STed2 upstream terms and the list of original
authors.