Write “i.e.” to mean “that is” or “in other words”
Use it to restate something more clearly or specifically
Place a comma after “i.e.” in American English
Do not use “i.e.” to mean “for example”
Use “e.g.” for examples instead of “i.e.”
Keep “i.e.” lowercase unless it starts a sentence
Use it inside parentheses or commas when clarifying a point
Avoid overusing it in formal writing