Built for economies with more than one currency
In Zimbabwe a business might quote in US dollars, be paid in ZiG and file tax in ZWG. In Zambia, Malawi or Mozambique, stock is bought in dollars and sold in local currency. In the Gulf, the dinars of Kuwait, Bahrain and Oman have three decimal places, and every amount is kept and shown to the fils. Zivobooks was designed around that from the start, not bolted on later.
Every foreign document keeps its original amount and the rate used, so you can always see both what the customer was charged and what it meant for your books.