Event: Game with variations and sub-variations
I'm the main variation header comment.
1.e4
1...e5
 |
 +- 1...c6
 |
 +- 1...c5
 |  2.Nc3
 |   |
 |   +- 2.Nf3
 |      2...d6
 |
2.Nf3
2...Nc6
3.Bc4
 |
 +- 3.Bb5
    3...a6
     |
     +- 3...Nf6
     |
    4.Ba4
     |
     +- 4.Bxc6
        4...dxc6
*