Select entities and the generator will create a map tag representing their purpose. Works with many types of entities. If crafting machines are selected, the generator will create the tag based on their final products. Also adds a tool for erasing map tags.
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.
In 2.0.35 factorio added an option to drag icon around in a bunch its UIs.
If it's technically possible to implement would've been very cool to have the same dragging option for this window:
