Brackets do not require a comma, and words or phrases inside brackets or parentheses are unconnected grammatically with the rest of the sentence.
It could go either ways?
You have to put the comma before 'but'.
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.
Not necessarily.
The comma should come before the word "but" when it is used to separate two independent clauses. For example: "I wanted to go to the store, but it started raining."
No
A period should come before the footnote at the end of a sentence, while a comma should not.
It could go either ways?
Yes
You have to put the comma before 'but'.
If a comma is needed, it normally comes after parenthesis.
The comma would come after it.
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.
Not necessarily.
Return to sender does not require quotation marks or a comma.
The comma should come before the word "but" when it is used to separate two independent clauses. For example: "I wanted to go to the store, but it started raining."
A comma should typically come before the word "but" when it is used to connect two independent clauses. If "but" is used to join two elements within a single clause, then a comma is usually not necessary.