Transaction types 1: Adding aliases to the built-in Buy transaction type to extend behavior to transactions marked Acheter and Kaufen.
Transaction types 2: Creating two custom transaction types with the same type name but different economic impacts.
Transaction types 3: Creating a custom transaction type to impact a currency holding by the value of a transaction property.
Transaction types 4: Creating a custom transaction type to map the result of a movement to a new currency holding using a SHK.