Mention the guidelines to write a structured COBOL program?

There is a format that has to be taken care of while writing a structured COBOL program. One has to work within these guidelines to make a structured COBOL-

• In order to construct a case, one has to use EQUIVALENT statements every time.
• Scope terminators are used for nesting.
• IN-LINE PERFORM statements are used for writing ‘do’ constructions. Also, use Tests before and Test after in performing statements while writing do-while statements.