Explanation:
The reader who has in front of the text with dialects can use a dictionary to understand what are characters talking, doing, what are their thoughts or plans.
Not only knowing the dialects of your own language can help but can help also knowing a foreign language who is in text. Maybe there are quotations on foreign language on the text or some character says something on the other language.
Noticing and applying the language in the text is very important because meanings of literary devices must be clear to the reader or the reader must understand the semantics of the words to know what is in the text.
