Editing Slash (punctuation) (section)

===Proofreading===
The slash or vertical bar (as a "[[#separatrix|separatrix]]") is used in [[proofreading]] to mark the end of [[marginalia|margin notes]]{{efn|For an example of this in practice, see the section on proofreading marks in ''[[New Hart's Rules]]''.<ref>{{cite book |contribution=Marking Proofs |at=2.4 |title=New Hart's Rules: The Oxford Style Guide |edition=2nd |editor-first=Anne |editor-last=Waddingham |date=2014 |publisher=Oxford University Press}}</ref>}} or to separate margin notes from one another. The slash is also sometimes used in various proofreading [[#Abbreviation|initialisms]], such as l/c and u/c for changes to [[lower case|lower]] and [[upper case]], respectively.