IBM SC34-6814-04 - Manual (Page 307)

Note:
1. CICS provides a list of named standard attribute bytes that you
may want to use. These standard attribute bytes are contained
within DFHBMSCA, which must be copied into your program. For
programming information, including a list of the attribute bytes
and their meanings, refer to BMS-related constants, in the CICS
Application Programming Reference manual.
2. The high-order bit must be set on in the last address, to indicate
to EDF that this is the last address.
Summary of the task-related user exit parameter lists
Figure 7 on page 286 shows, in diagrammatic form, the relationships between the
parameter lists that are discussed in the preceding sections.
DISPLAY DATA
UEPEDFPA
Address of
attribute byte
Address of
data field
Address of
attribute byte
.
.
.
Address of
attribute byte
Address of
data field
Figure 6. Display data parameter list
Chapter 2. Task-related user exit programs 285