Справка LibreOffice 7.5
Compiler options specified at the module level affect LibreOffice Basic compiler checks and error messages. Basic syntax as well as Basic set of instructions can be different according to the options that are in use. The less Option, the easiest and tolerant LibreOffice Basic language is. The more Option, the richer and controlled Basic language gets.
Compiler options must be specified before the executable program code in a module.
Specifies that the scope of the module is that of the Basic library it belongs to.
Options specified at the module level also affect LibreOffice Basic runtime conditions. The behaviour of LibreOffice Basic instructions can differ.