ɐ kəntˈeɪnmənt kæn biː ˈɛnɪθˌɪŋ ðə dɪvˈɛləpɚ wˈɔnts: ɐn ˈɪmɪdʒ ˈiːðɚ ɹˈæstɚ ɡɹˈæfɪks ɔːɹ ɐn ˌɛsvˌiːdʒˈiː ˈɪmɪdʒ, ˌænɪmˈeɪʃən, ɔːɹ ˈiːvən ˈoʊpən dʒˌiːˈɛl.
A containment can be anything the developer wants: an image (either raster graphics or an SVG image), animation, or even OpenGL.