Editing-an-indicator

If you want to augment the features of an existing indicator and you're good with C# coding (and the Visual Studio IDE), then you can simply use that indicator as a base class to inherit from (instead of using IndicatorBase) to create your own indicator with those additional features. But its functionality will be about the same as the base class indicator.

And if you're a C# or oops programmer, then you already knew that. What augmented feature were you going to add?

It is common to create a "derived class" from existing indicators, but then you're inheriting from IndicatorBase because your derived class will have totally new functionality.