Option Compatible extends %PRODUCTNAME Basic compiler and runtime, allowing supplemental language constructs to Basic.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 %PRODUCTNAME Basic librariesOption Compatible is required when coding class modules.Option Compatible
Special characters as identifiers
Option Compatible' With this option the code works, otherwise it causes a compiling errorSub Main ä = 10 print äEnd SubStatement Option VBAsupport 1 implies Option Compatible statement automatically.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.