Definition: Compose a new way to ask the same question. The new question must be asking the exact same thing as the original question does. Without any other information, you should be able to tell that the original question and the new question are the same. Preserve bracketed phrases in your new question. You can change the rest of the question provided the above requirements are satisfied. The new question must have a natural, fluent formulation, as if it were composed by a native English speaker. You will be given three pieces of information to help you create better questions. Those are: "Answer": the answer to the question, e.g., "Honolulu". "Answer Type": the type of the answer, e.g., "Location". "Auxiliary Information" is a detailed description of some concepts mentioned in the question, if any.
Input: original question: What is the file format of [Calamus]
answer: cfn, cdk
answer type: File Format.
auxiliary information: Calamus is a desktop publishing application, built for the Atari ST computer. The first version was released on July 1, 1987 by the former German software company DMC GmbH. Calamus is still supported by its German owner company, invers Software, and also runs under a built-in and transparent Atari emulator on Windows, or on other platforms such as Mac OS 9 and Mac OS X, using any available TOS emulator. Calamus is a software RIP application which generates high-quality output in any resolution. It was one of the first DTP applications supporting an own vector font format, notable for its support for automatic kerning even where adjacent characters are set in different fonts or at different sizes. Its high modularity offers features for almost every purpose in desktop publishing. Calamus also was one of the first DTP apps to support real virtual objects and frames, nondestructive vector masks, and editable PS/PDF import. Its measurement base of 1/10,000mm allows accurate positioning of elements. Calamus was ported to Windows by MGI Software and was released as Calamus 95. The current version of Calamus is Calamus SL2006, also available as SLC2006 and L2006.

What file format is [Calamus]?