Conditional Orders, where the underlying order type remains the same and the trigger is from another source, were added to cats-ls.
The trigger event (the condition) is no longer the bid/ask quote of the instrument to be traded but is the market quote of an index, the instrument underlying or another product. Two alternative methods for implementation are available:
In Germanic market this will be known as a "Wenn-Dann-Order".
cats-ls now also includes "Immediate or Cancel" (IoC) and "Fill or Kill" (FoK) orders.