Engine options, Art Tools, what are these?

In the options of the engine I can select what I want to have installed.
One of the options is “Art tools”.
What is this?

Hey BugSwat,

Art tools are optional tools that you can include that help with working with 3DS Max and Maya.

Here’s some additional information: Maya Animation Rigging Toolset | Unreal Engine Documentation

Have a great day!

And Blender?

Thank you!