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# Option Compatible Statement

Option Compatible extends LibreOfficeDev Basic compiler and runtime, allowing supplemental language constructs to Basic.

This statement must be added before the executable program code in a module.

This option may affect or assist in the following situations:

- Allow special characters as identifiers. all characters that are defined as letter in the Latin-1 (ISO 8859-1) character set, are accepted as part of identifiers.

- Create VBA constants including non-printable characters.

- Allow the New operator to be optional in Dim statements.

- Allow default values for optional parameters in procedures.

- Use named arguments when multiple optional parameters exist.

- Preload of LibreOfficeDev Basic libraries

Option Compatible is required when coding class modules.

### Syntax:

Option Compatible

### Example:

### Special characters as identifiers

            Option Compatible
            ' With this option the code works, otherwise it causes a compiling error
            Sub Main
                ä = 10
                print ä
            End Sub

Statement Option VBAsupport 1 implies Option Compatible statement automatically.

Related Topics

Rem Statement

CompatibilityMode() Function

Option Base Statement

Option Explicit Statement

Option VBASupport Statement

Option ClassModule Statement

Variables scope modification in Using Procedures and Functions with CompatibilityMode() function.

Refer to Identifying the Operating System and Getting Session Information for class module examples, or Access2Base shared Basic library for other class examples making use of Option Compatible compiler mode.

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