Acronyms should always be capitalized (although take care when you pluralize them: the 's' should remain lower case). As to using periods, generally they are not used for acronyms based on initials, such as CEO. Therefore, "CEO" as you have written it in the question is correct.
yes. grammar includes punctuation.
Punctuation and grammar
Punctuation goes after the bracket.
There are fourteen punctuation marks in English grammar.
"train" is correct - it doesn't require any capitalization or punctuation.
None, open punctuation means there is no punctuation after the salutation or the complimentary close.
A mixed punctuation style typically uses a colon after the salutation.
Grammar Diction Tone Punctuation
Words are not made out of punctuation.
The abbreviation for punctuation is "punct."
CEO
No, "full punctuation" is not a specific type of punctuation; it usually refers to the use of all standard punctuation marks like periods, commas, question marks, exclamation points, etc. for proper grammar and sentence structure.
Closed punctuation refers to a style of writing where minimal punctuation marks are used, such as omitting commas after salutations and closings in letters. It aims to create a more concise and formal writing style by reducing unnecessary punctuation.
yes. grammar includes punctuation.
A synonym would be punctuation mark
Punctuation and grammar
punctuation learn grammer