Yes, a comma typically comes after "such as" when it is used to introduce examples in a sentence.
It could go either ways?
Not necessarily.
A comma usually comes before "which" when introducing a nonrestrictive clause in a sentence. If "which" is part of a restrictive clause, then a comma is typically not used.
A comma would typically go after "for instance" because you're about to give an example of something. You will frequently find a comma where you take a breath in that sentence.
You have to put the comma before 'but'.
If a comma is needed, it normally comes after parenthesis.
The comma would come after it.
No
A subordinator usually comes before the comma in a complex sentence. Subordinators such as because, if, when, although typically introduce dependent clauses that come before or after the main clause in a sentence.
A comma usually comes before "which" when introducing a nonrestrictive clause in a sentence. If "which" is part of a restrictive clause, then a comma is typically not used.
A period should come before the footnote at the end of a sentence, while a comma should not.
Yes
Return to sender does not require quotation marks or a comma.
A comma typically comes before the word "so" when it is used as a conjunction to connect two independent clauses. For example: "I was feeling tired, so I decided to take a nap."
It could go either ways?
Not necessarily.
The comma typically comes before the conjunction "but" when it is used to connect two independent clauses. If "but" is used to connect two words or phrases within a single sentence, a comma is not necessary.