(1) There are many island nations, e. g., Japan, Iceland, the Philippines, etc. (2) Mr. Smith is very wealthy, i. e., rich. (3) There are many island nations ( e. g., Japan....). (4) Mr. Smith is wealthy (i. e., rich). (5) There are many island nations -- e. g., Japan....etc. (6) Mr. Smith is wealthy -- i. e., rich. (a) I would suggest No. 1 and No. 2. (b) I have given the American practice. I