fonts.xml

<?xml version="1.0" encoding="utf-8"?>
<familyset>
    <!-- by using a custom font family name here, we can leverage the system's built-in fontFamily="lato" attribute to access these fonts -->
    <family name="lato">
        <font style="normal" weight="300">fonts/Lato-Light.ttf</font>
        <font style="normal" weight="400">fonts/Lato-Regular.ttf</font>
        <font style="italic" weight="400">fonts/Lato-Italic.ttf</font>
        <font style="normal" weight="500">fonts/Lato-Medium.ttf</font>
        <font style="normal" weight="700">fonts/Lato-Bold.ttf</font>
        <font style="italic" weight="700">fonts/Lato-BoldItalic.ttf</font>
    </family>

    <!-- TODO: support aliases for different weights -->
    <alias name="lato-thin" to="lato" weight="100" />
    <alias name="lato-light" to="lato" weight="300" />
    <alias name="lato-medium" to="lato" weight="500" />
    <alias name="lato-black" to="lato" weight="900" />

</familyset>