Proofreading marks are used by proofreaders and editors to indicate an error in the copy. The nature of the mark is directly related to the type of error that has been produced, and proofreaders and editors will place the proofreading mark in the line of text where the error takes place.
Depending on the nature of the editing services, the proofreader will then either write a correction in the margin or will write a correction directly above the sentence.
You can read more about what proofreaders do in our guide to the differences between editing and proofreading.
If you’re teaching or learning English, one way to keep things interesting is to look at the use of idioms in music. One musician who certainly knows how to rock idioms is Lady Gaga.
