Description Files Extensions - What are description files and how do I open a description file? | OpenTheFile

What are description files and how do I open a description file?

File Type Category File Format
.ccd Description Files CloneCD Disc Image
.cue Description Files Cue Sheet File
.diz Description Files Description in Zip File
.ff Description Files Call of Duty 4 Fast File
.vis Description Files Visual Importer Script