The present invention relates to a solution comprising cellulose and an ionic liquid comprising anions and cations as solvent, wherein the cations comprise at least one atom selected from the group consisting of nitrogen, oxygen, sulfur and phosphorus which is present in protonated form, its preparation and use for physical and chemical treatment. A laser beam inclusive of the generated test signals is applied to a preset test recording area in a disc-shaped recording medium to record the generated test signals thereon. Those spectal components are projected onto the DMD. The metal core is electrically connected to the circuit unit in the connector. Destination data, as well as other data regarding the recipient is accessed from a database using the coded designation. Each connection made by an application to a database is monitored.