A process for preparing 10,11-dihydro-10-oxo-5H-dibenzb,fazepine-5-carboxamide, compound of formula, said process comprising a. The panel and stationary roof part are provided with a pin and curve part assembly for guiding and locking the panel in its closing position. Based upon the time-to-collision, a simple combination of visual and audio signals is designed to let the operator known of the imminency of a collision with the object so that the operator may react and make appropriate countermeasures. The solvent system improves the targeted delivery of the salicylic acid or derivative to relevant sites on the skin. The method comprising maintaining the inspiratory flow rate and volume of the patient to a certain value and then administering a medicament aerosol formulation to the patient using a breath activated inhalation device.