## The current behavior

The full value of the `key` is very difficult / impossible to find and use in the interface of the React Devtools.

![Kapture 2020-04-22 at 11 47 47](https://user-images.githubusercontent.com/1935696/79997715-25222680-84ba-11ea-97ba-51f1679a8c91.gif)

Only managed to find it by accident :(

## The expected behavior

The `key` is visible in the props list to the right.

### Detailed Proposal

As mentioned below in https://github.com/facebook/react/issues/18702#issuecomment-617924196

Add a light divider and new section in the props panel to the right.

Potentially also add a question mark that shows an explanation about the fact that things in this section are not really props.

Ref (Original implementation): https://github.com/facebook/react-devtools/pull/328
let ReactTypeOfWork: WorkTagMap = ((null: any): WorkTagMap);
  
  
  
  if (gte(version, '16.6.0-beta.0')) {
    ReactTypeOfWork = {
      Block: 22,
      ClassComponent: 1,
      ContextConsumer: 9,
      ContextProvider: 10,
      CoroutineComponent: -1, 
      CoroutineHandlerPhase: -1, 
      DehydratedSuspenseComponent: 18, 
      ForwardRef: 11,
      Fragment: 7,
      FunctionComponent: 0,
      HostComponent: 5,
      HostPortal: 4,
      HostRoot: 3,
      HostText: 6,
      IncompleteClassComponent: 17,
      IndeterminateComponent: 2,
      LazyComponent: 16,
      MemoComponent: 14,
      Mode: 8,
      Profiler: 12,
      SimpleMemoComponent: 15,
      SuspenseComponent: 13,
      SuspenseListComponent: 19, 
      YieldComponent: -1,