There is proably no documentation about that but il' try to explain (for CoD2):
K - kill
D - damagePHP Code:
timestring;K;victim_guid;victim_slot;victim_team;victim_name;attacker_guid;attacker_slot;attacker_team;attacker_name;attacker_weapon;damage;damage_type;damage_location
PHP Code:
timestring;D;victim_guid;victim_slot;victim_team;victim_name;attacker_guid;attacker_slot;attacker_team;attacker_name;attacker_weapon;damage;damage_type;damage_location