Belief_TradeRouteYieldChange and Promotion column MultiAttackBonus - what do these do?

[pineappledan]

I'm looking through the SQL and found 2 things that have no documentation:

    <Table name="Belief_TradeRouteYieldChange">
        <!-- Refer to Policies.Land/SeaTradeRouteGoldChange -->
        <Column name="BeliefType" type="text" reference="Beliefs(Type)"/>
        <Column name="DomainType" type="text" reference="Domains(Type)"/>
        <Column name="YieldType" type="integer" reference="Yields(Type)"/>
        <Column name="Yield" type="integer" default="0"/>
    </Table>

I suspect this is the old mendicancy code, but it sounds a lot more general. Could you use this code to give, say +2Culture to all Trade Routes, both internal and external? If so, is this now somewhat redundant with the new Belief_YieldPerActiveTR? How do these functions differ?

and

ALTER TABLE UnitPromotions ADD COLUMN 'MultiAttackBonus' INTEGER DEFAULT 0;

This appears to be a promotion version of France's Esprit de Corp. Is that correct?

Could @Gazebo or someone enlighten me as to what these tables/columns do?

 

[Padre19]

COLUMN 'MultiAttackBonus' in table 'UnitPromotions' is not used.
For France is used column 'MultipleAttackBonus' in table 'Traits' .