A method and device for harmless treatment and recycling of waste refrigerators. A document management system records, at a client device, changes that a user made to a root client-side instance of a document bundle to create a modified client-side instance of the document bundle, wherein the changes were made while the client device was not connected to a remote storage service. The intensity, frequency, amplitude, color or duration of the lighting can be adjusted according to the operational mode. These plants may be engineered for resistance to protox inhibitors via mutation of the native protox gene to a resistant form or they may be transformed with a gene encoding an herbicide tolerant form of a plant protox enzyme. The same number of nozzle arrays is communicated with each of the common liquid chambers, and each of the common liquid chambers is communicated with at least one of the plurality of the common liquid chambers at a portion different from a portion communicating with the liquid supply port. This crude aniline is then purified by means of a single-step or multi-step distillation process in which aqueous alkali metal hydroxide solution is added to the crude aniline prior to distillation andor during distillation of the crude aniline.