toolshed-8.x-1.x-dev/modules/toolshed_media/config/install/toolshed.media.mime_display.yml

mime_map:
  -
    name: PDF
    extensions: [ pdf ]
  -
    name: Text File
    extensions: [ txt, rtf ]
  -
    name: MS Word
    extensions: [ doc, docx, odt ]
  -
    name: MS Excel
    extensions: [ xls, xlsx, ods ]
  -
    name: Presentation
    extensions: [ ppt, pptx, odp ]