The item responders need the capability to simulate imputing items from different sides much like the extractor can.

Uses are much the same for extracting from different sides. For example:

• Thermal expansion machines can be configured to receive input from different sides
• IC2 Machines only accept input from certain sides
• Factorization barrels only receive items through the top

This was intentional, because the actual pipe does the insertion, because chips don't get notified on items that are incoming. However, chips actually extract themselves and put it INTO the pipe, so that is possible. When items come in, its not possible to know WHICH chip it was that caused the item to come in, so we don't know which chip to ask for inserting direction, because 2 chips can have different settings. This is why things such as the extension pipes exist, because inserting HAS to be with a pipe, or the code can get pretty messy. Will see about this in the future, but i will close for now because it was already something i was exploring.