That fitting is installed between the hot and cold supply lines at a single location/fixture in the house, usually the farthest away from the heater. Then, a compatible tankless heater can use a pump to push hot water out while pulling the cold water back in through the cold supply line - so no extra recirculating pipe has to be installed. You trigger the recirculation with a switch at the fixture, on a schedule, or with an app/smart home device.

The first one was done in Jan 2022. The patient, David Bennet, survived for 2 months.

“a novel ingredient composed of a linseed industry by-product, fibre and rapeseed [canola] oil”

Google drive does this even more, and every month or so they make the ‘show file location’ harder to find

Does anyone know the opposite solution? I have a MBP that always wants to be awake - particularly bc of Google Chat notifications or if my Bluetooth mouse gets bumped — is there a setting or program that will keep it asleep unless it’s opened, or even until a key is pressed?