This is a format for storing and presenting text information. It’s also referred to as CID 2 and is basically used for imaging and creating complex fonts in PDF. It’s based on the TrueType system, but allows for more precise adjustment and allows for refined writing due to a 16-bit structure that is very important when displaying Asian language symbols.
This format is used to store templates and designs in PageMaker 3. PT3 allows for a set of font descriptions, and for the layout and graphical elements to be stored in PostScript Type 3 format. This container is used as an editable file to meet publishing needs, and was created in a program for the PageMaker layout.