The mark traversal feature in Photo4D provides an efficient way for both marking and checking mark correctness. The Traversal subpage in the Main Window is designed for traversing selected marks in a reference image.
One important use of mark traversal is to examine the correctness of marking (see Checking Marks by Traversal). When an error is found, it should be corrected by first deleting the incorrect mark, then creating a new one.
The traversal feature also provides an efficient way to mark images (see Adding Marks by Traversal). Users can mark one image and then use the mark traversal feature to mark a second image.