MIL-STD-2301 Computer Graphics Metafile Cgm Implementation Standard For The National Imagery Transmission Format StandardThis standard establishes the requirements necessary to implement Computer Graphics Metafiles CGM used for the representation of symbol graphics in the National Imagery Transmission Format Standard NITFS.

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MIL-STD-2301A

d.    CGM                    Computer Graphics Metafile

e.    DISA                   Defense Information Systems Agency f.     DOD                    Department of Defense

g.    DODISS              Department of Defense Index of Specifications and Standards h.    FIPS                     Federal Information Processing Standard

i.     IC                         Intelligence Community

J.     ISO                      International Organization for Standardization

k.    JIEO                     Joint Interoperability and Engineering Organization l.     LSB                      Least Significant Bit

m.   MOA                   Memoranda of Agreement n.    MSB                    Most Significant Bit

o.    NIMA                  National Imagery and Mapping Agency p.    NITF                    National Imagery Transmission Format

q.    NITFS                  National Imagery Transmission Format Standard

r.     NTB                     National Imagery Transmission Format Standard Technical Board s.     RGB                     Red, Green, Blue

t.     SIDS                    Secondary Imagery Dissemination System u.    VDC                    Virtual Device Coordinates

3.2  Character.  1. A letter, digit, or other symbol that is used as part of the organization, control, or representation of data.  2. One of the units of an alphabet.  Note: For MIL-STD-2301A, a character (UT-1 ISO

4873, 1-octet coded Universal Multiple-Octet Coded Character Set (UCS), Basic Latin and Latin-1 Supplement) is constraint to Basic Latin (0020-007E) and Latin-1 Supplement (00A0-00FF).  The unsigned integer value of 0 (null) is also an allowed character value.

3.3  Commands.  For MIL-STD-2301A, commands are CGM statements that denote a state to act upon when CGM is read sequentially.  The words "command" and "element" are used synonymously throughout MIL- STD-2301A.

3.4  Computer Graphics Metafile (CGM).  CGM is a set of basic elements for a computer graphics data interface usable by many graphics-producing systems and applications.

3.5  Elements.  For MIL-STD-2301A, elements are CGM statements that denote a state to act upon when the CGM is sequentially read.  The words "command" and "element" are synonymously used in MIL-STD-2301A.

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