The Select And Manipulate tool lets you edit the parameters of certain objects, modifiers, and controllers by dragging "manipulators" in viewports.

You can add these custom manipulators to your scene:
These features have manipulators built in, which you can use to change parameters on these objects:
IK Solver Properties Rollout (HI Solver)
Primitives with a Radius parameter have a built-in manipulator for the radius.
When Select And Manipulate is active, the caddy appears in certain sub-object contexts for convenient access to settings. These include:
When Soft Selection is active, the caddy manipulator includes settings for Falloff, Pinch, and Bubble.
