IBM 5100 Apl Reference Manual

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CHAPTER 5. SYSTEM VARIABLES AND SYSTEM
FUNCTIONS
System Variables
Comparison Tolerance: 0 CT .
Index Origin: 010 .
Printing Precision: 0 PP
Print Width: 0 PW .
Random Link: 0 R L
Line Counter: 0 LC
Workspace Available: 0 WA
Latent Expression: 0 LX
Atomic Vector: 0 AV .
System
Functions
The 0 CR Function: Canonical Representation
The 0 FX Function: Fix .
The 0 EX Function: Expunge
The 0 N L Function: Name List
The 0 NC Function: Name Classification
CHAPTER 6. USER-DEFINED FUNCTIONS
Mechanics of Function Definition
Function Header.
Branching and Labels
Loc"!l and
Global Names
Interactive Functions
Requesting Keyboard Input during Function
Execution .
Arranging the Output from a User-Defined Function
Bare Output .
Locked Functions .
Function Editing
Displaying a User-Defined Function
Revising a User-Defined Function
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147
148
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148
Reopening Function Definition 150
An Example of Function Editing 151
Trace and Stop Controls 152
Trace Control 152
Stop Contro I 154
CHAPTER 7. SUSPENDED FUNCTION EXECUTION 155
Suspension 155
State I nd icator . 155
CHAPTER 8. TAPE AND PRINTER INPUT AND
OUTPUT 158
Establishing a Variable to be Shared . 158
Opening a Data File or Specifying Printer Output 159
Transferring Data 163
Transferring Data to Tape (OUT or ADD
Operation) . 163
Transferring Data from Tape (I N Operation) 164
Transferring Data to the Printer (PRT Operation) 164
Closing a Data File or Terminating the Printer Output 165
Retracting the Variable Name Being Shared . 165
Return Codes 166
An Example Using Tape and Printer I nputlOutput 167
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CHAPTER 9. MORE THINGS TO KNOW ABOUT
THE 5100
Data Security
5100 Storage Capacity
Storage Considerations
Tape Data Cartridge
Handling and Care
CHAPTER 10. THE 5103 PRINTER
How to I nsert Forms
How to Adjust the Copy Control Dial for Forms
Thickness
How to Replace a Ribbon .
CHAPTER 11. ERROR MESSAGES
APPENDIX A. SETUP PROCEDURES
Environment
5100 Setup Procedure .
Auxiliary Tape Unit Setup Procedure
Printer Setup Procedure
APPENDIX B. APL CHARACTER SET AND
OVERSTRUCK CHARACTERS
APPENDIX C. ATOMIC VECTOR
APPENDIX D. 5100 APL COMPATIBI LlTY WITH
IBM APLSV
GLOSSARY
INDEX
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IBM 5100 Specifications

General

Release Year	1975
RAM	16 KB - 64 KB
Storage	204 KB tape drive
Display	5-inch CRT
Operating System	APL/BASIC
Processor	IBM PALM (1.9 MHz)