Directory/Class.h file since 2010.02

Pretty old things.

Namespaces

namespace Foo since 2010.02
A namespace.

Classes

class Foo::Class since 2019.11
A class.
struct Foo::Subclass since 2019.11
A subclass.

Defines

#define A_DEFINE since 2010.02
A define.

Define documentation

#define A_DEFINE since 2010.02

A define.

Details should have the badge too.