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

TABLE LXVII. Begin Picture nonpadded, long form output

MSB LSB

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

0 3 31 = 0x007F

parameter list length

length = n (odd) C1

C2 .

C(n-1) Cn

5.1.2.1.3 Begin Picture Body element output. The CGM implementation for NITFS shall provide the capability to generate and output the Begin Picture Body element using the following format.

TABLE LXVIII. Begin Picture Body output.

MSB			LSB
15 14 13 12	11 10 9 8 7 6 5	4 3 2 1	0
0	4	0		= 0x0080

5.1.2.1.4 End Picture element output. The CGM implementation for NITFS shall provide the capability to generate and output the End Picture element using the following format.

TABLE LXIX. End Picture output.

MSB				LSB
15 14 13 12	11 10 9 8 7 6 5	4	3 2 1	0
0	5		0		= 0x00A0

5.1.2.1.5 End Metafile element output. The CGM implementation for NITFS shall provide the capability to generate and output the End Metafile element using the following format.

TABLE LXX. End Metafile output.

MSB			LSB
15 14 13 12	11 10 9 8 7 6 5	4 3 2 1	0
0	2	0		= 0x0040

5.1.2.2 Metafile Descriptor elements. The Metafile Descriptor elements describe the functional content, default conditions, and characteristics of the Metafile.

5.1.2.2.1 Metafile Version element output. The CGM implementation for NITFS shall provide the capability to generate and output the Metafile Version element (version 1) using the following format.

TABLE LXXI. Metafile Version output.

MSB LSB

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

1 1 2 = 0x1022

1 = 0x0001

5.1.2.2.2 Metafile Description element output. The CGM implementation for NITFS shall provide the capability to generate and output the Metafile Description element using the following formats. The Metafile Description element name is represented using the character string C1, C2, ... Cn with length n.

TABLE LXXII. Metafile Description padded, short form output.

MSB LSB

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

1 2 parameter list length

Length = n (even) C1

C2 .

Cn 0