Figure 1 shows the listing of a character arrangement table module. The numbered notes that follow the figure describe the items marked with the encircled numbers.

Figure 1. IEBIMAGE Listing of a Character Arrangement Table Module

Notes to Figure 1:

1. The name of the character arrangement table module, as it exists in the directory of the image library (including the 4-byte system-assigned prefix).
2. The 1-byte identifier of an IBM-supplied character set (in this example, the Text 1 and Text 2 character sets, whose identifiers are X'8F' and X'11').

   All character sets in SYS1.IMAGELIB or a user-specified image library are represented by odd-numbered identifiers. For a 3800 Model 3, if the character set identifier specified is even-numbered, it is increased by one at print time and the character set with that identifier is loaded.

3. The sequence number of the WCGM that is to contain the character set indicated below it (in this example, the second WCGM, whose identifier is 1).
4. The sequence number of the WCGM that contains the scan pattern for the 8-bit data code that locates this translation table entry.
5. Your 8-bit data code X'B9' transmitted to the 3800 Model 3 addresses this, the B9 location in the translation table, where the value X'39' in turn is the index into the WCGM that contains the scan pattern to be used (in this example, the Text 2 superscript 9).
6. An asterisk is shown in the listing for each translation table entry that contains X'FF'. This indicates that the 8-bit data code that addresses this location does not have a graphic defined for it and is therefore unprintable.
7. An asterisk in the list of character set identifiers indicates that no character set is specified to use the corresponding WCGM. If you specify 7F or FF as a character set identifier (to allow accessing a WCGM without loading it), a 7F or FF prints here.
8. The name of a graphic character modification module, as the name exists in the library's directory (including the system-assigned prefix).

   When you specify a graphic character modification module to be associated with a character arrangement table, you must specify the OPTION statement with the DEVICE parameter (for the 3800 Model 3) to ensure that the system assigns the correct prefix (GRF2) to the graphic character modification module name.