When do you place a comma after the salutation and when to you place a colon?

Hi, Actually, when you are writing a formal letter never use a comma after addressing who the letter is to. The proper puncuation is a colon (:), not a comma. I see nothing at all wrong with a comma. Example "Dear whom it may

Actually, when you are writing a formal letter never use a comma after addressing who the letter is to. The proper puncuation is a colon (:), not a comma. Example "Dear whom it may concern:"

The colon means that it refers to the red, but should read ' This ', not 'that'. What the writer really meant to reference by 'that', I do not know.

My understanding is that the word that in "That is all I know" references the blue texts. The red texts after the colon (:) tells how he thinks about the things being pointed to. Am I right?

Thanks, everyone. According to The American Heritage Guide to Contemporary Usage and Style: With other punctuation Put commas and periods inside closing quotation marks; put colons and semicolons outside. Other punctuation, such as exclamation

I have a question about the meaning of the clause "That is all I know" in boldface in the text below (which is itself a translation from another language). My question is: Does the clause "That is all I know" refer to what is

Jingtian, The New York Times style book says: periods and commas, in American usage, always go inside the closing quotation marks, regardless of grammatical logic. Another source gives this example: ...two complete thoughts joined by

Hi, 1.They say, 'come sunshine or high water, the post will get delivered' More accurately, this is the common saying. Neither snow nor rain nor heat nor gloom of night stays these couriers from the swift completion of their

1.They say, 'come sunshine or high water, the post will get delivered' is the first clause grammatically correct, if so what is it? a phrasal adverb? and what does it describe? if i were to change the 2nd clause to active voice: come