Attack basically means how hard a player hits the strings of the instrument.
The amount of attack has a big influence on the setup of a guitar.
A stronger attack results in greater string movement. This means that strings will need more room to move without hitting the frets, so the action will generally need to be higher.
A softer attack results in less string movement. Strings need less room to move, so the action can generally be lower.
In a factory situation, the real attack of the player is of course unknown, so an average attack is assumed.
