This was created for the Mac OS X operating system. Unlike the old operating environment versions, the font is stored in the thread of a data file instead of in resource threads. It’s been used as a container for TrueType fonts since 2009 after the release of Mac OS X 10.6, and is gradually replacing the TrueType Collection.
This bitmap image format was created for storing images taken in HDR mode, which provides a high dynamic contrast ratio. It may have either a 32- or 16-bit pixel structure. It is used for high-quality graphics with rich bitmap images, with or without lossy compression.