Examples of topics that are to be found in core aspects are: the product that is traded, the price the counter party has to pay and the quality or quantity of the goods that are sold/bought.
Izibonelo zezihloko ezizotholakala ezintweni ezingumongo yilezi: umkhiqizo othengiswayo, intengo iqembu eliphikisayo okufanele likhokhe kanye nekhwalithi noma ubungako bezimpahla ezithengiswayo / ezithengiwe.