Compaq COBOL
User Manual

Chapter 11
11	Using ACCEPT and DISPLAY Statements for Input/Output and Video Forms
11.1	Using ACCEPT and DISPLAY for I/O
11.2	Designing Video Forms with ACCEPT and DISPLAY Statement Extensions
11.2.1	Clearing a Screen Area
11.2.2	Horizontal and Vertical Positioning of the Cursor
11.2.3	Assigning Character Attributes to Your Format Entries
11.2.4	Using the CONVERSION Phrase to Display Numeric Data
11.2.5	Handling Data with ACCEPT Options
11.2.5.1	Using CONVERSION with ACCEPT Data
11.2.5.2	Using ON EXCEPTION When Accepting Data with CONVERSION
11.2.5.3	Protecting the Screen
11.2.5.4	Using NO ECHO with ACCEPT Data
11.2.5.5	Assigning Default Values to Data Fields
11.2.6	Using Terminal Keys to Define Special Program Functions
11.2.7	Using the EDITING Phrase
11.3	Designing Video Forms with Screen Section ACCEPT and DISPLAY (Alpha)
11.3.1	Using Screen Section Options (Alpha)
11.3.1.1	Comparison of Screen Section Extensions (Alpha) with Other Extensions of ACCEPT and DISPLAY
Chapter 12
12	Interprogram Communication
12.1	Multiple COBOL Program Run Units
12.1.1	Examples of COBOL Run Units
12.1.2	Calling Procedures
12.2	COBOL Program Attributes
12.2.1	The INITIAL Clause
12.2.2	The EXTERNAL Clause
12.3	Transferring Flow of Control
12.3.1	The CALL Statement
12.3.2	Nesting CALL Statements
12.3.3	The EXIT PROGRAM Statement
12.3.4	CALL Literal Versus CALL Data Name
12.4	Accessing Another Program's Data Division
12.4.1	The USING Phrase
12.4.2	The Linkage Section
12.5	Communicating with Contained COBOL Programs
12.5.1	The COMMON Clause
12.5.2	The GLOBAL Clause
12.5.2.1	Sharing GLOBAL Data
12.5.2.2	Sharing GLOBAL Files
12.5.2.3	Sharing USE Procedures
12.5.2.4	Sharing Other Resources
12.6	Calling Compaq COBOL Programs from Other Languages (Alpha)
12.6.1	Calling COBOL Programs from C (Alpha)
12.7	Calling Non-COBOL Programs from Compaq COBOL
12.7.1	Calling a Fortran Program
12.7.2	Calling a BASIC Program
12.7.3	Calling a C Program
12.8	Special Considerations for Interprogram Communication
12.8.1	CALL and CANCEL Arguments
12.8.2	Calling OpenVMS Alpha Shareable Images (OpenVMS)
12.8.3	Calling Tru64 UNIX Shareable Objects (Tru64 UNIX)
12.8.4	Case Sensitivity on Tru64 UNIX
12.8.4.1	Linker Case Sensitivity
12.8.4.2	Calling C Programs from Compaq COBOL on Tru64 UNIX
12.8.4.3	Calling COBOL Programs from C on Tru64 UNIX
12.8.5	Additional Information
Chapter 13
13	Using Compaq COBOL in the Alpha or VAX Common Language Environment
13.1	Routines, Procedures, and Functions
13.2	The OpenVMS Calling Standard (OpenVMS)
13.2.1	Register and Stack Usage (Alpha)
13.2.2	Return of the Function Value
13.2.3	The Argument List
13.3	OpenVMS System Routines (OpenVMS)
13.3.1	OpenVMS Run-Time Library Routines
13.3.2	System Services
13.4	Calling Routines
13.4.1	Determining the Type of Call (OpenVMS)
13.4.2	Defining the Argument (OpenVMS)
13.4.3	Calling the External Routine (OpenVMS)
13.4.4	Calling System Routines (OpenVMS)
13.4.4.1	System Routine Arguments (OpenVMS)
13.4.4.2	Calling a System Routine in a Function Call (OpenVMS)
13.4.4.3	Calling a System Routine in a Procedure Call (OpenVMS)
13.4.5	Checking the Condition Value (OpenVMS)
13.4.5.1	Library Return Status and Condition Value Symbols (OpenVMS)
13.4.6	Locating the Result (OpenVMS)
13.5	Establishing and Removing User Condition Handlers (OpenVMS)
13.6	Examples (OpenVMS)
Chapter 14
14	Using the REFORMAT Utility
14.1	Running the REFORMAT Utility
14.2	ANSI-to-Terminal Format Conversion
14.3	Terminal-to-ANSI Format Conversion
14.4	REFORMAT Error Messages