Weapon Bonus vs OB

[jowe01]

When creating a new weapon, I can give it a bonus. There are two entries possible there, "Weapon Bonus" and "OB". I am not sure, what is the difference between the two? For me they are the same thing, but apparently, they are not.

[Dakadin]

Weapon Bonus is for the item's bonus. The OB is the final total that is used in the combat tracker for the attack. The weapon bonus will not show up for the players if the item isn't ID'd.