MODCA
Encyclopedia
MO:DCA
is an IBM
compound document format for text and graphics elements in a document. The 'Mixed Object' moniker refers to the fact that a MO:DCA file can contain multiple types of objects, including text, images, vector graphics, and even objects marked as 'barcodes'. An application can simply include a string of digits along with controls that identify a specific type of barcode, and the rendering of bars will be done on the output platform (physical printer hardware or software emulation). It supports Revisable Documents, which are editable like revisable-form DCA, Presentation Documents, which provide specific output formatting similar to DCA final-form, and Resource Documents, which hold control information such as fonts. A MO:DCA file consists of a sequential, ordered hierarchy of independent objects - documents, pages, data objects, and resource objects such as fonts and ICC profiles. Each object is delimited by begin/end structures, and objects to be rendered specify presentation parameters and resource requirements in structures called "environment groups". Since the pages in MO:DCA documents appear in sequential order, presentation can start as soon as the first page is received.
Formats for specific objects are specified in OCAs (Object Content Architectures): PTOCA for Presentation and Text that has been formatted for output, GOCA for vector Graphics objects, IOCA for bitmapped Images and FOCA for Fonts. MO:DCA is implemented as IBM's AFP page description language.
is an IBM
IBM
International Business Machines Corporation or IBM is an American multinational technology and consulting corporation headquartered in Armonk, New York, United States. IBM manufactures and sells computer hardware and software, and it offers infrastructure, hosting and consulting services in areas...
compound document format for text and graphics elements in a document. The 'Mixed Object' moniker refers to the fact that a MO:DCA file can contain multiple types of objects, including text, images, vector graphics, and even objects marked as 'barcodes'. An application can simply include a string of digits along with controls that identify a specific type of barcode, and the rendering of bars will be done on the output platform (physical printer hardware or software emulation). It supports Revisable Documents, which are editable like revisable-form DCA, Presentation Documents, which provide specific output formatting similar to DCA final-form, and Resource Documents, which hold control information such as fonts. A MO:DCA file consists of a sequential, ordered hierarchy of independent objects - documents, pages, data objects, and resource objects such as fonts and ICC profiles. Each object is delimited by begin/end structures, and objects to be rendered specify presentation parameters and resource requirements in structures called "environment groups". Since the pages in MO:DCA documents appear in sequential order, presentation can start as soon as the first page is received.
Formats for specific objects are specified in OCAs (Object Content Architectures): PTOCA for Presentation and Text that has been formatted for output, GOCA for vector Graphics objects, IOCA for bitmapped Images and FOCA for Fonts. MO:DCA is implemented as IBM's AFP page description language.
Encoding
MO:DCA-P carries text, image, and graphics data objects, therefore the data is a mixture of binary data and character data. The recommended content-transfer-encoding is base64.Security
MO:DCA-P is a specification of final-form presentation data of an Image. It is not a programming language, does not contain any file operators, and therefore cannot corrupt a receiver's file system or programming environment. MO:DCA and Mixed Object Document Content Architecture are trademarks of the IBM Corporation.Interoperability
MO:DCA-P defines interchange sets to support interoperability. Currently defined sets are Interchange Set 1 (IS/1) and Interchange Set 2 (IS/2).Applications That Use MODCA
- MST Viewer MO:DCA viewer; used by IBM solutions.
- IBM DisplayWrite
- AFPAdvanced Function PresentationAdvanced Function Presentation is a presentation architecture and family of associated printer software and hardware that provides for document and information presentation independent of specific applications and devices....