3.3 Interfaces. 3.3.1 Write down the list of interfaces that have been changed or added. Briefly explain in one to three lines what each interface does (what data it transmits and in what direction). 3.3.2 For changed interfaces, explain what the interfaces do in their new state that they did not do before, when the changes in each interface will be written in red. (No need to describe the dialogue). 3.3.3 List all interfaces related to the addition of Pango subscribers according to the various processes. And describe the dialogue in each of them (no more than 3 dialogue details). 3.3.4 Detail the billing process of a Pango subscription in words and describe the connection between all the factors (Pango, the driver and parts of the parking lot system) with the help of Sequence Diagram (Swim Lanes). 3.4 charts/tables 3.4.1 Write down which charts\tables will be changed or added. 3.4.2 Using a record structure, describe the new tables, and those that have changed in their new state, with the hanges in each table written in red