Maybe a visual to show what changed and how it did and maybe a text like how it did and described what changed
Well I can't see the letter however there is many things that need to be done before sending a letter. Like signing it or writing who it's getting sent too. Those are the two biggest things to look at before sending a letter. Spelling errors as well, depending on who the letter is being sent to.
The answer is costs because the other words do not make any sense.
vernacular (by Native American tribes)
romantic (Othello, Hamlet etc)