What are the cid attributes for?

Question

Hello, 
 What are the cid attributes that SDL sprinkles liberally throughout the data? I'd prefer not to have them, if it they're not required for functionality. 
 Thanks, 
 Bill

Dave De Meyer · Answer

Bit more background... The historical reason for introducing @cid is to allow inline comment matching. So not only a comment on a topic, but on a paragraph or list item, etc. That can also be achieved by the @id attribute, however adding many more @id attributes would diminish UX as many tools rely on @id to allow link target selection for @conref or @xref, etc

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What are the cid attributes for?