How does partial filling of orders work?

This occurs when only some of the shares have filled in a placed ore.

For example: 

• A seller places a sell order for 3,000 shares at R5.00. 
• A buyer places a buy order to purchase 1,700 shares at R5.00. 

The order will match and a trade will take place. 

• The buyer’s full order of 1,700 shares will be filled. 
• The seller’s order will be partially filled by 1,700 shares. This leaves the seller with an active sell order in the market of 1,300 shares at R5.00.