Welcome to the Unreal Editor Tutorial refers to World Outliner Panel as the Scene Outliner Panel

Scene Outliner might be an old name for the World Outliner panel. The hyperlink refers to SceneOutliner, but the heading on the HTML page and the wording on the panel in UE4Editor refer to "World Outliner" as the name of the panel.

Repro:

1. Open UE4Editor to any project.
2. Click the mortarboard to spin up the Welcome tut
3. Press the "Next->" button until you get to the tutorial that talks about "The Scene Outliner Panel"
4. Click the hyperlink for "Scene Outliner Panel"

Result:
The link takes you to https://docs.unrealengine.com/latest/INT/Engine/UI/LevelEditor/SceneOutliner/index.html which discusses the "World Outliner Panel". See attached image.