The NeuroShell Trader Professional includes indicators that can call external DLLs created (usually) in C, C++, Power Basic, IBasic Pro or Delphi. This feature is located in the 'DLL calls' category in the Indicator Wizard. This is a very powerful feature, because it means that you can build custom indicators and other functions and use them in the NeuroShell Trader. You can even build a business selling these to NeuroShell Trader users. However, you will need to have a programmer available to help you set up the calls to the DLLs, and the programmer will have to know something about the DLL he/she is trying to call. 

Calls to NeuroShell 2 and Predictor/Classifier Nets 
You can call neural networks you created with NeuroShell 2, NeuroShell Predictor, or NeuroShell Classifier within the Trader. These net calls are special indicators in the 'DLL calls' category in the Indicator Wizard. You still have to train these nets within the respective programs, but they can be fired in the Trader, looking like an indicator. This indicator can then be used in a trading strategy, another indicator, or even another net. It is easy to train nets in these programs using Trader data if you use the Trader’s file export facility. 

In order to call Predictor/Classifier networks, you must own the NeuroShell Run-Time Server. When you call the indicator to fire NeuroShell 2 nets you must not only pass it the inputs to the net in the proper order, but the path to the .DEF file as well. For Predictor and Classifier nets, you will need the path to the saved network file as well as the inputs.