[Library_Once] executes any Lasso code in the specified format file. No result is returned to the current file.

If [Library_Once] is used multiple times referencing the same Lasso page then only the first [Library_Once] will actually perform the include. Subsequent [Library_Once] methods which reference the same file will do nothing.

This methods functions like the [Include_Once] method, but is useful for situations where the results of the included file should not be returned to the Web browser.