core/fontconfig/29-replace-bitmap-fonts.conf

<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>
  <!-- Prefer Microsoft versions of PostScript fonts, as these typically render a lot better on-screen 
       30-metric-aliases.conf will then also add the free clones of these fonts -->
  <alias binding="same">
    <family>Helvetica</family>
    <prefer><family>Arial</family></prefer>
  </alias>
  <alias binding="same">
    <family>Times</family>
    <prefer><family>Times New Roman</family></prefer>
  </alias>
  <alias binding="same">
    <family>Courier</family>
    <prefer><family>Courier New</family></prefer>
  </alias>
</fontconfig>