This screen shows the transaction in process.

• In the top right corner it shows what you are typing on the numerical keyboard
• In the top-left corner it displays the active user
• In the middle it will display the name of the contact assigned to that transaction (if ever)
• Swiping horizontally over a registered product will pop up a green „Invert“ button and a red „Delete“ button:
  – „Delete„: Will remove the chosen line (item) when tapped (see „Fast Cancel“)
  – „Invert„: Will invert the transaction (change the + into – ) which is useful when a client want to return a product in exchange of another one.  This way both products will be registered in a single transaction and will be printed on the same receipt.
  Example: “2 x Jeans 20.00“ will become “-2 x Jeans -20.00“
• Taping onto an already registered item, its count will increase by one