By default, a search skips the comments, and there's a checkbox in the search dialog to also search comments. However, when using comments, one often wants to search _only_ the comments: You have a large document with many comments in different places, and you want to find which one of them referred to some term or person - while in the document itself, it appears in dozens or hundreds of places.
*** This bug has been marked as a duplicate of bug 96474 ***
*** Bug 96474 has been marked as a duplicate of this bug. ***