synergise_friendship_interaction_bonus_combined_effect

synergise_friendship_interaction_bonus_combined_effect = {
	$SENIOR_CHARACTER$ = {
		# Diplomacy combi-synergies.
		if = {
			limit = { has_trait = education_diplomacy }
			# Diplomacy-Diplomacy
			if = {
				limit = {
					$JUNIOR_CHARACTER$ = { has_trait = education_diplomacy }
				}
				add_character_modifier = fp2_double_synergy_diplomacy_diplomacy_modifier
				$JUNIOR_CHARACTER$ = { add_character_modifier = fp2_double_synergy_diplomacy_diplomacy_modifier }
			}
			# Diplomacy-Martial
			if = {
				limit = {
					$JUNIOR_CHARACTER$ = { has_trait = education_martial }
				}
				add_character_modifier = fp2_double_synergy_diplomacy_martial_modifier
				$JUNIOR_CHARACTER$ = { add_character_modifier = fp2_double_synergy_diplomacy_martial_modifier }
			}
			# Diplomacy-Stewardship
			if = {
				limit = {
					$JUNIOR_CHARACTER$ = { has_trait = education_stewardship }
				}
				add_character_modifier = fp2_double_synergy_diplomacy_stewardship_modifier
				$JUNIOR_CHARACTER$ = { add_character_modifier = fp2_double_synergy_diplomacy_stewardship_modifier }
			}
			# Diplomacy-Intrigue
			if = {
				limit = {
					$JUNIOR_CHARACTER$ = { has_trait = education_intrigue }
				}
				add_character_modifier = fp2_double_synergy_diplomacy_intrigue_modifier
				$JUNIOR_CHARACTER$ = { add_character_modifier = fp2_double_synergy_diplomacy_intrigue_modifier }
			}
			# Diplomacy-Learning
			if = {
				limit = {
					$JUNIOR_CHARACTER$ = { has_trait = education_learning }
				}
				add_character_modifier = fp2_double_synergy_diplomacy_learning_modifier
				$JUNIOR_CHARACTER$ = { add_character_modifier = fp2_double_synergy_diplomacy_learning_modifier }
			}
		}
		# Martial combi-synergies.
		if = {
			limit = { has_trait = education_martial }
			# Martial-Diplomacy
			if = {
				limit = {
					$JUNIOR_CHARACTER$ = { has_trait = education_diplomacy }
				}
				add_character_modifier = fp2_double_synergy_martial_diplomacy_modifier
				$JUNIOR_CHARACTER$ = { add_character_modifier = fp2_double_synergy_martial_diplomacy_modifier }
			}
			# Martial-Martial
			if = {
				limit = {
					$JUNIOR_CHARACTER$ = { has_trait = education_martial }
				}
				add_character_modifier = fp2_double_synergy_martial_martial_modifier
				$JUNIOR_CHARACTER$ = { add_character_modifier = fp2_double_synergy_martial_martial_modifier }
			}
			# Martial-Stewardship
			if = {
				limit = {
					$JUNIOR_CHARACTER$ = { has_trait = education_stewardship }
				}
				add_character_modifier = fp2_double_synergy_martial_stewardship_modifier
				$JUNIOR_CHARACTER$ = { add_character_modifier = fp2_double_synergy_martial_stewardship_modifier }
			}
			# Martial-Intrigue
			if = {
				limit = {
					$JUNIOR_CHARACTER$ = { has_trait = education_intrigue }
				}
				add_character_modifier = fp2_double_synergy_martial_intrigue_modifier
				$JUNIOR_CHARACTER$ = { add_character_modifier = fp2_double_synergy_martial_intrigue_modifier }
			}
			# Martial-Learning
			if = {
				limit = {
					$JUNIOR_CHARACTER$ = { has_trait = education_learning }
				}
				add_character_modifier = fp2_double_synergy_martial_learning_modifier
				$JUNIOR_CHARACTER$ = { add_character_modifier = fp2_double_synergy_martial_learning_modifier }
			}
		}
		# Stewardship combi-synergies.
		if = {
			limit = { has_trait = education_stewardship }
			# Stewardship-Diplomacy
			if = {
				limit = {
					$JUNIOR_CHARACTER$ = { has_trait = education_diplomacy }
				}
				add_character_modifier = fp2_double_synergy_stewardship_diplomacy_modifier
				$JUNIOR_CHARACTER$ = { add_character_modifier = fp2_double_synergy_stewardship_diplomacy_modifier }
			}
			# Stewardship-Martial
			if = {
				limit = {
					$JUNIOR_CHARACTER$ = { has_trait = education_martial }
				}
				add_character_modifier = fp2_double_synergy_stewardship_martial_modifier
				$JUNIOR_CHARACTER$ = { add_character_modifier = fp2_double_synergy_stewardship_martial_modifier }
			}
			# Stewardship-Stewardship
			if = {
				limit = {
					$JUNIOR_CHARACTER$ = { has_trait = education_stewardship }
				}
				add_character_modifier = fp2_double_synergy_stewardship_stewardship_modifier
				$JUNIOR_CHARACTER$ = { add_character_modifier = fp2_double_synergy_stewardship_stewardship_modifier }
			}
			# Stewardship-Intrigue
			if = {
				limit = {

As written in game/common/scripted_effects/03_dlc_fp2_scripted_effects.txt.