Command line options fall into this category if the settings they control can be applied to a list of multiple files within a given scope without causing ambiguities. Group options are useful for such operations as:
Within a given scope (see Command Line Scope Operator ()) the command line parser assigns the group classification to each option until the first source file name is encountered; group option settings are applied to all file names that follow within a given scope. After encountering the first source file name, options are assigned the file classification.