Printer and printing system

The disclosure discloses a printer including a controller configured to execute a setting process, a transport stop process, and a first transport control process. In the transport stop process, a driving device is controlled to stop transport of a print-receiving medium in a state in which an intermediate position faces a cutter. The intermediate position is between a print part last in order and a print-receiving part located immediately after the print part last in order. In the first transport control process, the driving device is control to transport the print-receiving medium to an upstream side by a first unit transport amount in accordance with an operation of a first operation device or to transport the print-receiving medium to a downstream side by a second unit transport amount in accordance with an operation of a second operation device.