You can selectively find front panel and block diagram differences of a VI when comparing VIs or VI hierarchies. For the block diagram, you can choose to ignore cosmetic differences. A cosmetic change is any change that does not affect the execution of the block diagram. Furthermore, you can choose to ignore the position and size changes in front panel and block diagram objects. Position and size changes include movement of an object from front to back and vice versa.
You also can identify differences in VI attributes, such as settings in the VI Properties dialog box.