old_contents: import fontforge
  
  fontforge.open('input.otf').save('termu.sfd')
  
new_contents: import fontforge
  
  font = fontforge.open('input.otf')
  font.fontname = 'Termu-' + font.fontname
  font.familyname = 'Termu: ' + font.familyname
  font.fullname = 'Termu: ' + font.fullname
  font.save('termu.sfd')
  
subject: Add "termu" to the name of the font