I am writing a Picture Viewer program and one of the things I want to be able to do is to add descriptions to the pictures. I tried adding a description in the Comments area but that didn't work out because the file structure contains pointers to other data and changing the file length invalidated those pointers. I gave up on that approach and used an external file to hold the descriptions. That works but today I had the thought that I can just add the description to the end of the jpeg file. I tried it and I can retreive the description and doesn't seem affect the picture but I'm wondering if there's anything I'm overlooking.