This Newsletter No.
Base Publication No.
Prerequisite Newsletters! None
Data Areas and Control Block Logic
This Technical Newsletter contains replacement pages
Before inserting any of the attached pages into the
Summary of Amendments ix-xii
identical page numbers are involved, always use the pages with the
latest date (shown in the slug at the top of the page). The page with
the latest date contains the most complete information.
Changes or additions to the text and illustrations are indicated by a
vertical line to the left of the change.
This Technical Newsletter incorporates changes reflecting the 4331
Communications Adapter Synchronous Data Link Control,