capabilities_with_gravity.json

{
  "@context" : [
    "http://iiif.io/api/image-api/context.json",
    {
      "ab" : "http://penibelst.de/",
      "ab:gravity" : {"@type" : "xsd:boolean"}
    }
  ],
  "@id" : "http://libimages.princeton.edu/loris",
  "contact" : "mailto:admin@example.com",
  "contentNegotiation" : "true",
  "defaultFormat" : "jpg",
  "regionByPct" : "true",
  "regionByPx" : "true",
  "rotationArbitrary" : "true",
  "rotationBy90s" : "true",
  "sizeByForcedWH" : "true",
  "sizeByH" : "true",
  "sizeByPct" : "true",
  "sizeByW" : "true",
  "sizeByWH" : "true",
  "ext:watermarking" : "true",
  "extensions" : [
    {
      "@id" : "ab:gravity",
      "description" : "Gravity suggestion for the image.",
    }
  ] 
}