Prone
You are lying on the ground. You take a -4 penalty to melee attack rolls. You gain a +4 bonus to your Armor Class against ranged attacks, but you take a -4 penalty to your Armor Class against melee attacks. Standing up from prone is a move action.
Source
Core Rulebook pg. 277
Dragonscript
Effect
bonus -4 to character.attack.melee as misc; append ['+4 bonus to your Armor Class against ranged attacks.', '-4 penalty to your Armor Class against melee attacks.'] to character.situationSpecificBonuses;