# RFC8081 defines the top-level `font` media-type and includes # definitions for font/ttf, font/otf, and font/collection, # but neglects to include the OpenType Collection (.otc) # file extension, meaning the IANA DB's font/collection # only covers TTC and not OTC: # # tools.ietf.org/html/rfc8081#section-4.4.4 # “Type name: font # Subtype name: collection # Required parameters: None # Optional parameters # Name: outlines # Values: a comma-separated subset of TTF, CFF, and SVG # # docs.microsoft.com/en-us/typography/opentype/spec/otff # ”OpenType fonts may have the extension .OTF, .TTF, .OTC or .TTC. # The extensions .OTC and .TTC should only be used for font collection files.“