IMS MFS  (Message Formatting Service)

Duration:   3 days

Participants:   Application developers, analysts, technical support, and others involved in coding or using MFS control blocks.

Objectives:   Upon successful completion of this course you will be able to: -  Code MFS control blocks for 3270 screens, including paging and linking. -  Design a 3270 screen. -  Code appropriate IMS application program source code. -  Handle user input errors. -  Use MFS utilities.

Overview:   This course is designed to teach screen formatting using MFS in an IMS TM (formerly named IMS DC) environment.

Prerequisites:   COBOL, PL/I, or mainframe Assembler programming experience. Participants are expected to have basic experience programming IMS TM applications and the ability to use TSO and JCL.

Format:   -  Lecture and intensive workshop. Many exercises require some knowledge of COBOL, PL/I, or or HLASM (mainframe Assembler) programming to complete. -  Recommend presenting this course in conjunction with our IMS Transaction Manager course.

Topic Outline:   -  MFS Functionality         MFS Formatting         MFS Control Blocks         MFS On-Line         Format Request         Transaction Flow         MFS Transaction Flow         MFS Language Utility         MID and MOD         DIF and DOF         DIF/DOF         3270 considerations -  MFS Code Syntax and Rules         MFS Syntax         Assembler Operators         MFS Examples              Display              DIF/DOF              MID              MOD              Chains              COBOL              PL/I              ALC -  Device Format Code         DIF/DOF Macro Order         Syntax Rules         FMT Statement         DEV Statement Syntax         DEV Example         DEV for 3270 Printers         DEV Example for Printer         DIV Statement         DPAGE Statement         DPAGE Example         DFLD Statement for 3270         DFLD Statement for 3270P         DFLD Examples         FMTEND Statement -  Message Description Coding and Syntax         MID and MOD Statements         MSG         MSG Example         LPAGE Statement         LPAGE COND=         LPAGE Example         SEG Statement         SEG Example         MFLD Statement         MFLD Examples         MSGEND Statement -  MFS Input         Non-MFS Input         Source of MFS Input         PF (Program Function) Keys         PF Key Example         Review - 1         PF Key Features         MFS Actions on Input         Field Justification and Padding         Field Truncation and Defaults         Message Prefix         Message Segments         Input Examples         Field and Segment Input Editing         Password Examples -  Device and Message Output         Components for Output         DOF Provides         MOD Provides         Message Output Options 1, 2 and 3         Output Fill -  Logical Paging         Logical Page         Output Examples 1 and 2         Multiple Output Messages         Input Logical Pages         Logical Page Summary -  Paging at the Device         Message/Device Independence         Page Definitions         Physical Page and Example         Logical Page         Multiple Logical Page Example         PA Key Functions         PA Shortcomings         Without Logical Paging         Logical Paging Commands         Paging Flexibility         Coding User Logical Paging         Paging Using Operator Control Table -  MFS Linkage         Chained Control Blocks         Format Control Block Interrelationships         LPAGE/DPAGE Linkage         LPAGE/Control Block Linkage         Message Field and Device Field Linkage         Summary of Control Block Linkages         Format Buffer Pool and Pool Manager         Control Block Loading -  Application Programming         Input Call Sequence         Output Call Sequence         Purge Call         Dynamic Attribute Modification         Dynamic Attribute Example         Dynamic Attribute Example - COBOL         Dynamic Attribute Example - ASM         Dynamic Attribute Example - PL/I         Cursor Modification         System Control Area (SCA)         Field Clearing Options         Logical Paging         Bit Configurations in Programs -  Screen Design         Design Tasks         Fixed Form Example         Column Form         Free Form with Delimiters         Code Link Format         Screen Design Considerations -  User Considerations         Who is the User?         User Considerations         User Aids         Ergonomics -  Additional MFS Statements         Compilation Statements         DO/ENDDO Statements         DO Example         Operator Control Table and Example -  MFS Utilities         MFS Language Utility         Production Mode         Test Mode         Batched Production Mode         MFS In-Core Format         MFS Service Utility and $$IMSDIR -  Programming Considerations         Literals         Format Coding         Miscellaneous

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