It doesn't - it was available since 3.0, which is more than 10 years ago. When replying to a topic you have a topic review at the bottom - there you can quote individual posts. Have a read on Re: Is there a multi-quote feature in 3.0.7?
And those latin letters should relate to what? Also note the memberlist also has an
#to list all names not starting with a latin letter.
Of which page?