When you mean “for example,” use e.g. It is an abbreviation for theLatin phrase exempli gratia. When you mean “that is,” use “i.e.” It isan abbreviation for the Latin phrase id est. Either can be used toclarify a preceding statement, the first by example, the second byrestating the idea more clearly or expanding upon it. Because these usesare so similar, the two abbreviations are easily confused. If you juststick with good old English “for example” and “that is” you won’t giveanyone a chance to sneer at you. If you insist on using theabbreviation, perhaps “example given” will remind you to use “e.g.,”while “in effect” suggests “I.E.”Since e.g. indicates a partial list, it is redundant to add “etc.” at the end of a list introduced by this abbreviation.