105 Parenthetics (English)

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Parenthetics is a term to describe any expression that can be set off with the commas or obviously parentheses as the name implies. A parenthesis marks the beginning of a word, phrase, or clause that can be removed from the sentence without changing the meaning of it. A parenthetic expression is denoted by any punctuation that separates that text from the rest of the sentence.

Parenthetics and Commas

When a comma is used to separate a parenthetic expression or parenthetic clause within a sentence then another comma is used at the end of that clause or expression. When commas separate parenthetics from the rest of the sentence, then they are setting off a nonrestrictive clause.

Parenthetics and Semicolons & Colons

In the case of both semicolons and colons, neither is used to set off parenthetic expression; however, either can be contained within the content of a parenthetic expression. At no time can two semicolons or two commas be used to set off a parenthetic expression.

Parenthetics and Hyphens, En dashes & Em dashes

Of the three--a hyphen, an en dash, and an em dash--only an em dash, which is equivalent in length to two en dashes (hence the alternate title: double en dash), is qualified to set off a parenthetical expression within a sentence.
When setting off a parenthetic expression, an em dash is neither preceded nor followed by a space.

Parenthetics in Parentheses, Brackets, and Braces

The quintessential symbols of a parenthetical expression, parentheses, brackets, and braces should be dispensed with care so as not to break up a sentence or paragraph, increasing the difficulty of the readability with each added use of a parenthetic clause, especially as is the case of parentheses, brackets, and braces.