these are the bonus skills
# Bonus skills and levels for Mages
# skill_id,skill_level;
REBIRTH_MAGE_SKILL = 1062,2;1085,3;1059,3;
# Bonus skills and levels for Fighters
# skill_id,skill_level;
REBIRTH_FIGHTER_SKILL = 1045,6;1048,6;1086,2;
1062 defines the skill id and the coma (,2) defines the skill level
so 1062,2; means that it gives you the skill id 1062 which is 2 level.
Hopefully you understand it.