Because ASCII had already replaced the ← with the _, something which made PIP somewhat harder to use, as this: PIP destination←source /switches became thi

Because ASCII had already replaced the ← with the _, something which made PIP somewhat harder to use, as this: PIP destination←source /switches became this: PIP destination=source or this: PIP destination_source https://en.wikipedia.org/wiki/Peripheral_Interchange_Program https://en.wikipedia.org/wiki/Peripheral_Interchange_Program