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File Number 1401/1460-13
Form A24,..3071-2




Systems Reference Library




Speci;;ll Feature Instructions
IBM 1401 Data Processing' System
IBM 1460 Data Processing System

The special features described in this publication
are available for the IBM 1401 and/or 1460 Data
Processing Systems. Each feature is described and
identified for the system to which it can be applied.
These features offer additional flexibility in applica-
tiems where special processing requirements exist.
Also included are the instructions for the special
features on the IBM 1402, 1403, and 1009 when these
units are used with the IBM 1401 or 1460 Data Proc-
essing System.
For a list of other publications and abstracts, see
the IBM 1401 and 1460 Bibliography, Form A24-1495.
Preface




This publication is a portion of the reference text for Tape Input/Output Instructions (A24-3069)
the IBM 1401 and 1460 Data Processing Systems. The Section F Tape Input/Output Operations
full set of manuals provides a detailed explanation of
all the instructions used by the system to manipulate
data. Detailed explanations of the instructions used
Disk Input/Output Instructions (A24-3070)
Section G Disk Input/Output Operations
I
with the required and available input/output units at- Miscellaneous Input/Output Instructions (A24-3068)
tached to the system are also included. The reader
Section H Miscellaneous Input/Output Oper-
should be familiar with the IBM 1401 System Sum-
ations
mary, Form A24-1401, or the IBM 1460 System Sum