In the FILE SECTION of COBOL, the RECORD CONTAINS clause is used to specify the length of a record in bytes. It indicates the total size of a record in a file, including all its fields.

In COBOL, when working with indexed files, the "Relative key" is used for accessing records. This key defines the relative position of a record within the file. It is essential for efficient record retrieval in indexed files.

In COBOL, the LOCAL-STORAGE clause is used to define a variable with a scope limited to a specific paragraph or section. Variables declared under LOCAL-STORAGE are accessible only within the specific paragraph or section where they are defined.

In the FILE CONTROL paragraph of a COBOL program, the ORGANIZATION clause is used to specify the organization of a file. It defines how the records within the file are structured and stored, such as SEQUENTIAL or INDEXED.

The SELECT statement is used in COBOL programs to retrieve data from one or more tables in a database. It allows specifying the columns to be retrieved and conditions for filtering data, enabling the extraction of specific information from the database.

In COBOL, the EXPONENTIATION operator (**) is used for raising a numeric value to a specified power. For example, X ** 2 represents X squared.

In COBOL, the OCCURS special register is used to retrieve the total number of occurrences in a table. It provides information about the size of the table defined using the OCCURS clause.

When a group data item is used to represent a record structure, each individual data item within the group is referred to as an Element. It is important to understand the terminology when dealing with hierarchical data structures.

When encountering unexpected results in a COBOL program, suspected to be due to a logic error, the first step is to review the program's logic and flow. This involves analyzing the program's algorithms, conditions, and data processing steps to identify any logical inconsistencies or errors. Debugging techniques may include adding temporary diagnostic output, tracing program execution, using breakpoints, and employing step-by-step execution tools to isolate and correct the logic error.

The COMPUTE statement in COBOL is used for simplifying complex arithmetic calculations. It provides a concise and readable way to perform calculations on numeric data items in COBOL programs.

The COBOL Data Division is used to define the data items that the program uses. It includes the description of variables, constants, and records necessary for processing data in the program.

The INSPECT statement in COBOL is employed for searching and replacing specified characters within a string. It provides a powerful mechanism for manipulating character data, facilitating tasks such as data cleaning and transformation.