What other people consider bad habits and simple grammar mistakes are to this copyeditor sins and vices. I've never compiled a list of the seven deadly writing vices, but if I were, I suspect misuse of the virgule would be on there.
Don't sigh in relief, thinking you could not have committed a sin of virgules because you don't even know what a virgule is. You type virgules dozens of times a day because the virgule—otherwise known as the slash, the slant, the solidus, or the oblique—is a component of every Web address.
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1. In Web addresses: for example, http://ShaunaRoberts.blogspot.com
2. In fractions: for example, 1/2, 3/8, 1/100
3. In compound units: for example, miles/hour, milligrams/liter, feet/second
4. In the phrase "and/or" (although the phrase itself is inelegant)
5. In date abbreviations: for example, 03/12/2010 (although keep in mind that a European may interpret that date as December 3, 2010)
6. In some specialized scientific uses: for example, to show a person has two different alleles of a gene, such as G6PD*A/G6PD*B
7. In phrases showing alternative names or spellings for the same person or thing: for example, Inanna/Ishtar, Hercules/Heracles, Jekyll/Hyde
8. In running text to show the original line breaks in a poem: for example, "I think that I shall never see/a poem lovely as a tree"
But other uses of the virgule shriek like fingernails on a blackboard:
1. In place of a hyphen: for example, "the Boston/Washington train" instead of "the Boston-Washington train"
2. In lists: for example, "On my vacation I toured London/Paris/Rome/Venice."
3. In compound units with three or more units: for example, feet/second/second should be feet/second^2 (that is, seconds squared)
4. In place of the word "or" in most situations: for example, "he/she" (try "he or she" or reword instead)
5. In place of the word "and": for example, "The position is open to physicians/scientists."
6 (and most important of all). In situations in which it's unclear whether the virgule stands for a hyphen, "and," "or," or "and/or": for example, "The applicant shall take oral/written tests"; "The applicant must have an M.D./Ph.D."
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Booksigning in Ohio
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I won't be posting next week. Please stop by again at the end of March for a new post.