Adds the unusual "Peruse Inserter", whose range continuously cycles between 1, 2, and 3 tiles, in a fixed sequence, such that items from any input tile may be placed on any output tile.

Why would you use this? Because it allows for higher storage chest density, with a ratio of 3 chests : 1 inserter (vs the ordinary 1 chest : 1 inserter). To this end, it is powered by fluids, not electricity, allowing it to be tiled infinitely without any precious tiles being stolen by pesky power poles. It accepts, as fuel, any fluid with a temperature and non-zero heat capacity (so, in vanilla, exclusively steam).

Additionally, Peruse Inserters have a unique interaction with Quality; each quality tier will increase its maximum reach by 1 tile.
This can allow for even greater storage density, or even feeding all sciences to a lab with a single inserter, but keep in mind: it will take longer for a quality cycle through all pickup-drop combinations, and having more tiles to drop to isn't always a good thing (even an Uncommon Peruse Inserter will start dropping some items behind a 3x3 assembler).