AcuCOBOL is an imperative, procedural COBOL language. The GOBACK command is used for program flow control. It returns the program control to the main block.

For example:

cobol
 
 
Copy code
   PERFORM Test-Block
   GOBACK

Test-Block.
   DISPLAY "This is a test block"
   END-PERFORM

In the above example, the PERFORM command will jump to the Test-Block section of the code. Once the end of the Test-Block is hit, the GOBACK command will send control back to the PERFORM statement after the Test-Block code block. This allows the code to repeat the code in the Test-Block block every time the GOBACK command is called.