e.g. / i.e.: meaning and punctuation
For example versus that is, and the comma.
E.g. means for example. I.e. means that is. Put a comma after each abbreviation: bring two things, e.g., a pen and a key. Do not use i.e. when you are only giving an instance. Do not use e.g. when you are restating the whole.
Examples
Usea citrus fruit, e.g., a lemon
Usethe chair, i.e., Lee
Avoidthe chair, e.g., Lee (If Lee is the chair, not an instance.)