quotation marks

Quotation marks are a way of separating out a word, a phrase, a quote attributed to somebody and written exactly as it is spoken. Quotation marks, known also as quotes or inverted commas, can be [...]

the comma

The comma is important.  It is not used as much as it should be in written English, and this makes comprehension of sentences a whole lot more difficult, especially if English is not your native [...]