List of "magical" methods: where is documentation?

[XiJinping]

When I use TFPGList or similar, I need to implement method Equal. So, I have 2 questions here: is this method a part of some interface (something like `IEquable`?) and where I can find documentation about all such "magical" methods/interfaces?

PS. I call it magical because it looks to me like "__eq__" in Python. But they are not related to operators, right? I mean Equal(...) is not magically turn into "operator =" ?

[PascalDragon]

You need to implement the Equal operator (in mode Delphi, in the other modes it's =) for your type. Also take into account how operator overloading behaves in regards to generics (meaning that you can't use a global operator overload, but it needs to be a part of the type).

[XiJinping]

Thank you!