A liquid ejecting apparatus can array dots in line even when nozzles are arranged in line and ink droplets are ejected from a plurality of liquid ejecting parts with a time difference. Substrates treated therewith exhibit high water and oil repellency and allow sticking contaminants to be effectively wiped off. These methods are also provide a means of imaging the patient entirely during radiation therapy treatments without any additional scan time. The execution environment not only monitors threads, detects and corrects deadlocks, logs and controls program exceptions, but also data input and output ports of the map components are processed in parallel to take advantage of data partitioning schemes. The signal is located to be viewed by a user via the user’s peripheral vision and his secondary concentration so the user can maintain his primary concentration on the target. A beam crossing point common to first and second adjacent beams is selected, and the sensor alignment is verified by determining whether the beam crossing point is coincident with the first detection object.