Document Content Architecture
The Document Content Architecture, or DCA for short, is a standard developed by IBM for text documents in the early 1980s. DCA was used on mainframe and iSeries systems, and formed the basis of DisplayWrite's file format. DCA was later extended as MO:DCA (Mixed Object Document Content Architecture), which added embedded data files, like graphics.
The original purpose of DCA was to provide a common document format that could be used across multiple IBM word processing platforms–such as the IBM PC, IBM mainframes, the Displaywriter dedicated word processor, and the IBM 5520 Administrative System.
DCA defined two types of documents:
- Revisable-form Text (DCA/RFT) which was editable.
- Final-form Text (DCA/FFT) which was "formatted for a particular output device and cannot be changed."
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