Can you explain this flow charts

Flowchart for Purchasing PURCHASING From Stores Approved Requisition 1 Preparation of Purchase Order Set Requisition 1 Purchase Order 5 Purchase Order 4 Purchase Order 3 Purchase Order 2 Purchase Order 1 Stores By Number To Receiving Sending Original Purchase Order to Supplier Vouchers Payabile 2. Flowchart for Receiving RECEIVING From Purchasing Purchase Order 4 410 Receive Goods Match With Purchase Order Preparation of Receiving Report Purchase Order 4 Receiving Report 4 Receiving Report 3 Receiving Report 2 Receiving Report 1 To Vouchers Payable For Receipts and Returns TO Stores By Number Flowchart for Purchasing PURCHASING From Stores Approved Requisition 1 Preparation of Purchase Order Set Requisition 1 Purchase Order 5 Purchase Order 4 Purchase Order 3 Purchase Order 2 Purchase Order 1 Stores By Number To Receiving Sending Original Purchase Order to Supplier Vouchers Payabile 2. Flowchart for Receiving RECEIVING From Purchasing Purchase Order 4 410 Receive Goods Match With Purchase Order Preparation of Receiving Report Purchase Order 4 Receiving Report 4 Receiving Report 3 Receiving Report 2 Receiving Report 1 To Vouchers Payable For Receipts and Returns TO Stores By Number