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Chapter 5. Record Sequence<br />
Single-RIP System<br />
5 - 2 IJPDS Formats<br />
The following rules apply to the sequence of font records:<br />
After an FDR, any record other than a CDR ends the subfont or<br />
regular font.<br />
An SFD may optionally be followed by one CDR, defining a character<br />
that becomes the default for any undefined character in the super<br />
font.<br />
After an SFD, any record other than CDR or FDR ends the super font.<br />
After an FDM, any record other than a CDM or CCD ends the regular<br />
font.<br />
After an SFM, any record other than a CDM or CCD ends the super<br />
font.<br />
Super fonts defined with SFD may be followed by regular fonts<br />
defined with FDM. FDRs following the SFD (and default CDR, if<br />
present) are subfonts of the super font.<br />
A CDM or CCD may follow an FDM, an SFM, or another CDM or<br />
CCD.<br />
A CDR may follow an FDR, an SFD, or another CDR.<br />
RIP, MSG, and NOP records which may occur do not affect the<br />
sequence of the font records.<br />
When continuation records for a character are used, the first CDR, CDM,<br />
or CCD for a character and its continuation records must be in the proper<br />
sequence in the job file. Apart from these restrictions and the default/null<br />
restrictions described in the CDR, CDM, and CCD descriptions in Chapter<br />
4, characters in a font can be defined in any order.<br />
If required, fixed file records must occur after the fonts have been defined.<br />
Fixed files are optional and up to 256 fixed files can be present in a job<br />
file. A fixed file is started with a load fixed file record (LFF). The records<br />
that are permitted in fixed files are shown in Figure 5.1. A fixed file is<br />
ended with another LFF record or an end of fixed files (EFF) record.<br />
The variable data follows the EFF record. The first record of the variable<br />
data must be a start of document (SOD), start of document and cue<br />
(SDC), or message (MSG) record. The records that are permitted in the<br />
variable data section of the job file are shown in Figure 5.1.<br />
A document may not be split across tape volumes. The end of the job file<br />
is signaled by an end of job (EOJ) record.
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