Compounds of the formulawhere the variables are as defined in the specification, are useful for preventing or treating emphysema and related pulmonary conditions of mammals and other diseases and conditions which are responsive to RAR\u03b3 agonist retinoids, such as skin related diseases, including but not limited to acne and psoriasis. The or each rim retracts automatically under the action of a load which biases the or each rim from its rest position towards its working position, the load being placed on the upper surface of the tray vertically above the or each rim. Based on the document images and the ancillary images after the adjustment, the image processing device generates set data each piece of which has a set of a document image and an ancillary image based on ancillary data identified as being associated with the document image.