File Scope
A signature with file scope captures the state of all the models in the file plus file-level information (defined below). Thus, a file signature becomes invalidated by any change to the content of any model or to file-level information.
A signature with file scope captures the state of all the models in the file plus file-level information (defined below). Thus, a file signature becomes invalidated by any change to the content of any model or to file-level information.