How to use

Create an instance of the tool and right click like on the upgrade planner to open the configuration GUI.

Features in the pipeline

A Blacklist mode is also a feature in the pipeline, likely a toggle switch like in the deconstruction planner.
Shift selection to remove tiles / ghosts
Options to add more than 2 tiles of configuration with potential to set a number of the offset
Expand to include preset "shapes" (circle, square, rectangle, triangle)
Include a "fill" tool or brush tools like MS Paint.
Another tab that lets you control all tiles around one entity in each direction (i.e. can have concrete one side, stone the other side), useful for if you only want to have hazard concrete on the LeftRight and not TopBottom
option like FORCE replace in 2.0 that will overwrite all tiles, including existing player tiles.

Set a custom tile blueprint to be placed under entities
Maybe set an option to place tiles ahead / under the player as they walk to help build natural pathways
Option to put in blueprint library (limited by modding API)