take 'X-Ray' for your colleged cdrom ,so you can look into it clearly and easy to find out what you want cdrom in a pile of disk, you can review the image of all your cdrom easy , and with a thumb let you know what 's the file ,just like a image, you can see a smaller picture ,a text file, you can see first 100 character of your document , so you can recall your memory what the file is.It is indead a good tools for you if you have a lot of cdrom!