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An open file format is a file format for storing digital data, defined by a published specification usually maintained by a standards organization, and which can be used and implemented by anyone. For example, an open format can be implemented by both proprietary and free and open source software , using the typical software licenses used by each.
PCX, standing for PiCture eXchange, is an image file format developed by the now-defunct ZSoft Corporation of Marietta, Georgia, United States.It was the native file format for PC Paintbrush and became one of the first widely accepted DOS imaging standards, although it has since been succeeded by more sophisticated image formats, such as BMP, JPEG, and PNG.
Portable Anymap File Format ASCII.pnm image/x-portable-anymap Yes PostScript: page description/scripting language, levels 1–3 Adobe.ps, .ps2, .ps3 printing/publishing industry standard format PPM: Portable Pixmap File Format ASCII.ppm image/x-portable-pixmap Very easy to understand. Programs to analyze and write to this format are easily ...
MEI – Music Encoding Initiative file format that attempts to encode all musical notations; MIDI – MIDI file format that is a music sheet for instruments; MUS, MUSX – Finale sheet music file; MXL, XML – MusicXML standard sheet music exchange format; MSCX, MSCZ – MuseScore sheet music file; SMDL – Standard Music Description Language ...
^ ASN.1 has X.681 (Information Object System), X.682 (Constraints), and X.683 (Parameterization) that allow for the precise specification of open types where the types of values can be identified by integers, by OIDs, etc. OIDs are a standard format for globally unique identifiers, as well as a standard notation ("absolute reference") for ...
A final way of storing the format of a file is to explicitly store information about the format in the file system, rather than within the file itself. This approach keeps the metadata separate from both the main data and the name, but is also less portable than either filename extensions or "magic numbers", since the format has to be converted ...
O. Office Open XML; Office Open XML file formats; Standardization of Office Open XML; Ogg; OMG standard; Open Publication Distribution System; Open Data Description Language
An open file format is licensed with an open license. [3] [4] [failed verification] [contradictory] For example, an open format can be implemented by both proprietary and free and open-source software, using the typical software licenses used by each. In contrast to open file formats, closed file formats are considered trade secrets.