I wanted to update the IPTC caption field for a couple of boxing images in the middle of my workflow for submitting files to a wire service but it wasn't totally clear to me what I had to do. When I clicked the "I" in the lower left corner and the IPTC menu displayed, since I didn't see any check boxes I made the erroneous assumption that it was a display only menu. Now that the files are long gone I took the time to go back and experiment and it turns out that the IPTC menu for an individual item can be modified and saved and it does not affect the current stationary pad. Wish I knew this last night but now that I know, it is just what I'd want it to do.