using <a href="https://github.com/fonttools/fonttools/tree/master/Doc/source/designspaceLib">designspace</a>.</p>
    <p>The fonts are built using a completely free and open source workflow using industry-standard tools (<a href="https://github.com/fonttools/fonttools">fonttools</a>), a package of custom python scripts (<a href="https://github.com/silnrsi/pysilfont">pysilfont</a>), and a build and packaging system (<a href="https://github.com/silnrsi/smith">Smith</a>). The whole system is available in a pre