100644 blob bcd433d3523687b4c148349d23f0273a720bf013	README.txt
040000 tree a551e4ded9122c15ee3b3e0823b8ee16fd44d3df	gregbook
040000 tree d2bd8222c7de3a79c2d4b3ca0dbc4a18def9ac6b	pngminim
040000 tree c95cd0fa97e5040b400b48efa07fdf1fede3aea3	pngminus
040000 tree bf8c7f593c6608a1b7b45bb08fd7afc645b426bd	pngsuite
040000 tree 9d4a4e217a2bf820cdc1b86eee2baf230a256b9d	visupng