Melee Damage

This is how UO Forever currently figures melee damage.
This formula does not take into account damage absorption by armor or any other means.

Formula: ((basedamage + QualityModifier) * bonus) where bonus =

bonus += Math.Min(100.0, attacker.Str) / 500.0 +

bonus += Math.Min(anatomyValue, 100.0) / 500.0 + if (anatomy == 100)(bonus +0.1) +

bonus += (Math.Min(tacticsValue, 100) - 50.0) / 100.0 +

bonus += Math.Floor(lumberValue / 285);

Explanation and Example

Formula	Description	Example
((basedamage + QualityModifier) * bonus) where bonus =	(Weapon Base Damage + Exceptional Modifier) * Bonus	(35+7) * 1.35 =
bonus += Math.Min(100.0, attacker.Str) / 500.0 +	Lowest of (100 and Your Strength) / 500 +	0.2 +
bonus += Math.Min(anatomyValue, 100.0) / 500.0 + if (anatomy == 100)(bonus +0.1) +	Lowest of (Your Anatomy and 100) / 500 + (Additional .1 if GM Anatomy) +	0.3 +
bonus += (Math.Min(tacticsValue, 100) - 50.0) / 100.0 +	Lowest of ((Your Tactics and 100) -50) / 100 +	0.5 +
bonus += Math.Floor(lumberValue / 285);	Rounded Down (Your Lumberjacking / 285);	0.35;

The above information was based on a character with 100 Tactics, 100 Anatomy, 100 Lumber-jacking, and 100 Strength; getting a 35 roll of damage on whatever axe he/she would have had equipped.
The Quality modifier was found by adding 20 percent to the base damage. (This may be incorrect)

References:
Initial Post: http://www.uoforum.com/threads/publish-4-september-5-2014-meta-pets-pvp-tweaks-and-more.42697/
Correction: http://www.uoforum.com/threads/publish-4-september-5-2014-meta-pets-pvp-tweaks-and-more.42697/page-4