IBM GC28-6680-5 OS Tape Labels R21.7 Apr74 free download

File name GC28-6680-5_OS_Tape_Labels_R21.7_Apr74.pdf

File No. S360/S370-30 Order No. GC28-6680-5 OS Systems Reference Library OS Tape Labels Release 21 This publication describes how the IBM System/360 Operating System processes magnetic tape volumes with IBM standard labels, American National Standard labels, nonstandard labels, or no labels. Included for the guidance of programmers and operations analysts are discussions of: Label formats and contents Tape volume layouts Label processing for input, output, multiple data set, and multiple volume conditions Tape characteristics Nonstandard label processing routines and volume label editor routines Component considerations Using tape volumes created by other systems External labels Sixth Edition (April 1973) This edition replaces the previous edition (numbered GC28-6680-4) and makes that edition obsolete. This edition applies to Release 21.7 of OS and to all subsequent releases unless otherwise indicated in new editions or technical newsletters. Significant system changes are summarized under "Summary of Amendments for Release 21.7" and "Summary of Amendments for Release 21" following the list of figures. Each technical change is marked by a vertical line to the left of the change. Information in this publication is subject to significant change. Any such changes will be published in new editions or technical newsletters. Before using the publication, consult the latest IBM System/360 and System/370 Bibliography, GA22-6822, to learn which editions and technical newsletters are applicable and current. Requests for copies of IBM publications should be made to the IBM branch office that serves you. Forms for readers' comments are provided at the back of the publication. If the forms have been removed, comments may be addressed to IBM Corporation, Programming Center-Publishing, Department D58, Monterey and Cottle Roads, San Jose, California 95193. All comments and suggestions become the property of IBM.