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A serial comma is used to separate a list of items: For breakfast, we had ham, eggs, and toast. A serial semi-colon is used when items in the list have commas: For breakfast, we had ham, ...
#4: Attribution notice removed
Source: https://writers.stackexchange.com/q/5428 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#3: Attribution notice added
Source: https://writers.stackexchange.com/q/5428 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision
A serial comma is used to separate a list of items: > For breakfast, we had ham, eggs, and toast. A serial semi-colon is used when items in the list have commas: > For breakfast, we had ham, eggs, and toast; orange juice, coffee, and milk; pancakes, waffles, and French toast; and a Pepto-Bismol chaser. Both AP and Chicago style manuals are clear about the serial semi-colon use when the items in question have interrupter clauses: > He is survived by a son, John Smith, of Chicago; three daughters, Jane Smith, of Wichita, Kan., Mary Smith, of Denver, and Susan, of Boston; and a sister, Martha, of Omaha, Neb. But I've come across a different construction recently, and I can't quite decide whether it takes a serial semi-colon or not. The sentence runs something like this: > James T. Smith, vice president of widgets at WidgetCo, Mary Holmes, chief foo officer at FoobRUs, Sheldon DeVane, head of global placeholding at RiMelioraDies Inc., and Lisa Catera, chief lending officer at Plugitin Motors, will be speaking at tomorrow's conference. Using serial semi-colons somehow trips my eye: > James T. Smith, vice president of widgets at WidgetCo.; Mary Holmes, chief foo officer at FoobRUs; Sheldon DeVane, head of global placeholding at RiMelioraDies Inc.; and Lisa Catera, chief lending officer at Plugitin Motors; will be speaking at tomorrow's conference. The one which really bothers me is before "will be speaking." If the sequence were reversed, the semi-colons wouldn't bother me at all: > Speakers at tomorrow's conference include James T. Smith, vice president of widgets at WidgetCo.; Mary Holmes, chief foo officer at FoobRUs; Sheldon DeVane, head of global placeholding at RiMelioraDies Inc.; and Lisa Catera, chief lending officer at Plugitin Motors. Given that we are using the Oxford or serial comma before the _and_ (that part is not negotiable), for this particular construction — name, title at company — is it all commas, or the serial semi-colon? I'm leaning towards all commas, but I welcome arguments on either side.