Nota is the concept of an intelligent laser light system that grows beyond the benefits of pure lighting. Among other things, Nota ensures individually adjustable light brightness at the workplace. The pen belonging to the system serves as a switch, writing instrument and key for notes and data. The pen can communicate with all laser light sources in the office and automatically connects to them. When the pen is put down in writing mode, relevant notes, e-mail etc. are displayed, for example. These can be sorted and deleted. By writing directly on the table with light, sketches and notes can be written.