Anonymously
any marking is legal i.e. dots, initials, names
No penalty, play the balls as they lie. You may need to mark one and then after the other one is played replace it. The one that was originally stationary should be replaced to as close to its original location as possible.
A Golf Ball
Golf Ball
It is a golf ball that has the logo of a resort/golf course printed on the ball.
You can hit a golf ball with a golf club.
A golf ball.
That would be a golf ball.
A golf ball weighs more.
There are 366 dips in a golf ball
its a golf ball