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 VI.  Begin Metafile nonpadded, long form input.

MSB                                                                                                                                                               LSB

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

0                                                            1                                                                 31                                = 0x003F

parameter list length

length = n (odd)                                                                           C1

C2

C(n-1)                                                                                  Cn

5.1.1.1.2  Begin Picture element input.  The CGM implementation for NITFS shall provide the capability to input and interpret the Begin Picture element using the following formats.  The Begin Picture element name is represented using the character string C1, C2, ... Cn with length n.

TABLE VII.  Begin Picture padded, short form input.

MSB                                                                                                                                                                          LSB

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

0                3                                                      parameter list length length = n (even)                                                                               C1

C2

Cn                                                                                            0

TABLE VIII.  Begin Picture nonpadded, short form input.

MSB                                                                                                                                                                          LSB

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

0                3                                                      parameter list length length = n (odd)                                                                                C1

C2

C(n-1)                                                                                        Cn

TABLE IX.  Begin Picture padded, long form input.

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 (even)                                                                          C1

C2

Cn                                                                                       0

TABLE X.  Begin Picture nonpadded, long form input.

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

5.1.1.1.3  Begin Picture Body element input.  The CGM implementation for NITFS shall provide the capability to input and interpret the Begin Picture Body element using the following format.

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