[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]

1. e4 { comment1 } e5 { comment2 }
( { comment3 } 1... e6 (1... d6) 2. d4 (2. Nf3){ comment4 } ) { comment5 } 2. Nf3
*