What's the difference between and , and ?

Answer 1

While and are of course more semantically correct, there seem definite legitimate reasons to use the and tags for customer-written content.

In such content, words or phrases may be bolded or italicized and it is generally not up to us to analyze the semantic reasoning for such bolding or italicizing.

Further, such content may refer to bolded and italicized words and phrases to convey a specific meaning.

An example would be an english exam question which instructs a student to replace the bolded word.