ACUCOBOL-GT contains many extensions to the ANSI standard. These are summarized below: 
            
            
               
               - Terminal-oriented source format 
- Compile-time modification of source by Identification Area flags 
- The Identification Division is optional 
- IS RESIDENT PROGRAM clause 
- An index item may subscript a table other than the one it is associated with. Index data items may be used any place a numeric
                  data item is allowed 
               
- Apostrophes may be used to delimit nonnumeric literals. Hexadecimal literals are allowed 
- A procedure name may be the same as a data item name 
- Initial paragraph name not required 
- Paragraph names allowed in Area B 
- Multiple-word SOURCE-COMPUTER and OBJECT-COMPUTER names 
- Data Division FILE SECTION header is optional 
- The word ALPHABET is optional when you are declaring an alphabet-name in the SPECIAL-NAMES paragraph 
- The ASSIGN TO clause may have a data item specified for the external file name. Also, the external file name is optional in
                  the clause 
               
- An optional device type may be specified in an ASSIGN clause 
- WITH COMPRESSION, WITH ENCRYPTION added to ASSIGN clause 
- LINE and BINARY options in ORGANIZATION clause 
- COLLATING SEQUENCE clause 
- COMPRESSION CONTROL clause 
- LOCK MODE clause 
- LENGTH OF clause for data literals 
- RECORD-POSITION clause for data items 
- RESERVE clause with the NO or ALTERNATE options 
- Split key specification for indexed files 
- FILE STATUS clause for sort files 
- REDEFINES can reference an item that is itself a redefinition of an area 
- Additional SPECIAL-NAMES clauses: CONSOLE IS CRT, CRT STATUS, CURSOR IS, EVENT STATUS, and NUMERIC SIGN SEPARATE 
- SEGMENT-LIMIT clause (level 2 segmentation feature) 
- VALUE OF FILE-ID clause 
- USAGE COMP-1, COMP-2, COMP-3, COMP-4, COMP-5, COMP-6, COMP-N, COMP-X, FLOAT, DOUBLE, and HANDLE 
- USAGE types: 
                  
                     
                     
                        
                           
                           
                           
                           
                              
                              
                                 
                                 | SIGNED-SHORT | UNSIGNED-SHORT |  
                                 
                                 | SIGNED-INT | UNSIGNED-INT |  
                                 
                                 | SIGNED-LONG | UNSIGNED-LONG |  
 
 
 
- ADDRESS OF phrase in arithmetic expressions 
- Tables may contain up to 15 dimensions 
- A PICTURE string may contain up to 100 characters 
- Level 78 constant names 
- WHEN SET TO FALSE phrase for level 88 condition-names. A FALSE phrase added to the SET statement 
- SCREEN SECTION 
- SCREEN SECTION BEFORE, AFTER, and EXCEPTION embedded procedures 
- SCREEN SECTION EVENT procedures 
- IS SPECIAL-NAMES phrase in record description entry 
- CHAINING phrase added to Procedure Division header 
- Non-display data items may be specified in a NUMERIC class condition 
- USE statements may reference sort files 
- RETURN-CODE special register 
- ACCEPT with screen control 
- ACCEPT FROM SYSTEM-INFO, TERMINAL-INFO, INPUT STATUS, LINE NUMBER, COMMAND-LINE, ESCAPE KEY, CENTURY-DATE, CENTURY-DAY, STANDARD
                  OBJECT, and WINDOW HANDLE 
               
- ACCEPT FROM SCREEN 
- ACCEPT CONTROL statement 
- ACCEPT ALLOWING messages phrase 
- ACCEPT external-form-item statement 
               
- ADD TABLE statement 
- CALL RUN statement 
- CALL PROGRAM statement 
- CALL THREAD statement 
- Literals allowed in the USING portion of a CALL statement. Also, non-level 01 group items may be listed in the USING phrase
                  
               
- BULK-ADDITION phrase for OPEN statement 
- BY VALUE phrase for CALL statement 
- OMITTED/NULL phrase for CALL statement 
- NOT ON OVERFLOW accepted for CALL statement 
- ALL option for CANCEL statement 
- CHART option for CANCEL statement 
- CHAIN statement 
- CLOSE WINDOW statement 
- COMMIT statement 
- COPY RESOURCE statement 
- CREATE statement 
- DELETE FILE statement 
- DESTROY statement 
- DISPLAY with screen control 
- DISPLAY SUBWINDOW/WINDOW statement 
- DISPLAY FLOATING WINDOW statement 
- DISPLAY SCREEN statement 
- DISPLAY LINE statement 
- DISPLAY BOX statement 
- DISPLAY UPON WINDOW TITLE statement 
- DISPLAY UPON COMMAND-LINE statement 
- DISPLAY INITIAL WINDOW statement 
- DISPLAY INDEPENDENT WINDOW statement 
- DISPLAY TOOL-BAR statement 
- DISPLAY control-type statement 
               
- DISPLAY MESSAGE BOX statement 
- DISPLAY external-form-item statement 
               
- DRAW CHART statement 
- ENTER CHART DATA statement 
- ENTRY statement 
- GOBACK statement 
- INQUIRE CONTROL statement 
- INQUIRE WINDOW statement 
- LOCK THREAD statement 
- TRAILING option on INSPECT statement 
- MODIFY statement 
- NEXT SENTENCE statement 
- WITH LOCK and ALLOWING phrases added to OPEN statement 
- MASS-UPDATE option on OPEN statement 
- WITH NO LOCK and ALLOWING phrases on READ statement 
- PERFORM THREAD statement 
- PREVIOUS option on READ statement 
- Literal allowed in FROM phrase of REWRITE and WRITE statements 
- SEND message statement 
- RECEIVE message statement 
- SET CHART ATTRIBUTE statement 
- SET FILE-PREFIX statement 
- SET ENVIRONMENT statement 
- SET EXCEPTION statement 
- SET TO ADDRESS OF statement 
- SET TO SIZE OF statement 
- SET HANDLE statement 
- SET THREAD statement 
- SET WINDOW statement 
- STOP THREAD statement 
- SUBTRACT TABLE statement 
- LESS THAN and LESS THAN OR EQUAL options on START statement 
- UNLOCK statement 
- DECLARATIVE procedures may reference procedures outside of DECLARATIVES 
- Recursive CALLs 
- Dynamically determined SORT keys 
- EXIT PERFORM, EXIT PARAGRAPH and EXIT SECTION 
- ROLLBACK clause for LOCK MODE phrase, on SELECT statement in FILE-CONTROL paragraph 
- COMMIT statement may indicate end of transaction and cause changes to be written to transaction log file 
- ROLLBACK statement 
- SET statement with ADDRESS OF clause sets address of linkage data item to specified value 
- START TRANSACTION statement 
- SUPPRESS clause for the COPY statement 
- USE active_x_control_item and USE ole_object_item statements 
               
- USE FOR REPORTING statement 
- UNLOCK THREAD statement 
- WAIT statement