This constant determines whether the osOpenFlags function is included or excluded during compilation. The function is compiled if the constant value is 1 and omitted when the value is 0.

If this constant is not defined, it defaults to a value of 1, and the function is included in the output code. If all osOpen* functions are unused, the system will ignore object names, and the code dedicated to name management will be removed. This optimization reduces the final size of the output code. For further information regarding object naming and opening procedures, refer to the system objects management section.