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Chapter 4. Record Formats<br />
Super Font Definition (SFD)<br />
Super Font Definition (SFD)<br />
The SFD record is used to provide general information about the<br />
Category I super font and to indicate that the following FDR and CDR<br />
records define subfonts and subfont characters. A super font is a doublebyte<br />
font used with certain languages to provide a large number of<br />
characters that all have the same typeface and size.<br />
Byte Position Bytes Field Name Description<br />
Following an SFD record, all FDR records define subfonts and all CDR<br />
records define characters for the current subfont. As an option, a single<br />
CDR may immediately follow an SFD to define the default character for<br />
any undefined character in the super font. After an SFD, any record other<br />
than CDR, RIP, NOP, MSG, or FDR ends the super font.<br />
1-2 2 Record Length The length of this record, in binary, including the record length<br />
field. For example, hex 00 12 specifies a record length of 18 bytes.<br />
3 1 Cyclic Record Count A binary cyclic record count using modulo 256. Each record in the<br />
job is counted, starting with hex 01 for the first record. The 255th<br />
record is hex FF and the 256th record is hex 00. This count is used<br />
to verify record sequence.<br />
4 1 Control Code A binary code that identifies the record type. A value of hex 2A<br />
identifies the SFD record.<br />
5-6 2 Row Count An unsigned binary number that specifies the number of dot rows<br />
for characters in all subfonts of this superfont. For example, hex 00<br />
16 specifies 22 rows.<br />
7 1 Reserved This field is not used and must contain all binary zeroes.<br />
8 1 Interline Spacing (ILS) A binary number that specifies the number of additional dot rows of<br />
space to be generated following each line printed with this font.<br />
The range is 0 - 255.<br />
The value in this field overrides the ILS of the subfonts. The value<br />
in this field is overridden by the ILS values in the SOD, SDC, SFI,<br />
or SFT records and the Y line spacing value in the SFS record.<br />
9 1 Font Rotation A binary code that identifies the font rotation.<br />
0 (hex 00)=Upright2 (hex 02)=Inverted<br />
1 (hex 01)=Right3 (hex 03)=Left<br />
The font must be patterned in an upright rotation. This field is used<br />
by the printing system to rotate the font to the desired rotation. All<br />
subfonts of this super font must have the same rotation.<br />
The value in this field overrides the rotation value in the subfonts.<br />
If it is to be used in more than one rotation in the same job, a super<br />
font and all corresponding subfonts must be defined once for each<br />
rotation.<br />
10 1 Super Font Number A number, in binary, that identifies the super font. The range is 0 -<br />
254. For example, hex 0A specifies a font number of 10.<br />
11-18 8 Super Font Name The name of the super font in EBCDIC. The field must be left<br />
justified and space filled to the right. For example, hex C8 C5 E6<br />
C9 E3 E3 40 40 specifies a font name of HEWITT.<br />
Reference Guide 4 - 21
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