Allows you to walk between what used to be obstacles such as directly adjacent solar panels, pipes, steam engines, mining drills, and chests. No more frustration when walking about your base!
I found this mode so useful and really miss it when a multiplayer game does not use it.
Only one thing that I found it does not catch is on the small pump from either Bobs mods or Angels mods (not sure exactly which mod it is from as they seem to be played together)
Small pumps are not covered by this mod due to some issues with pumps that arose in the past, and also the fact that pumps are getting a major overhaul in the next Factorio version.
Looking through Luzivras'es mod's code, I noticed it is the same code as in Squeak Through, just with some code split between files, some variable names changed and minor adjustments added.