PROBLEM TO BE SOLVED: To provide at low cost a wondrous sheet, a pattern consisting of pictures, characters and symbols or their combination of which changes and which is flexible and a wondrous container, onto which the wondrous sheet is pasted.;SOLUTION: The wondrous sheet consists of a transparent seal 7, on which the picture pattern 9 is applied, and an adhesive 6, which is painted on the surface of the sheet except the erasing regions 2 and 3 in the picture pattern 9. In this wondrous sheet, at the erasing regions 2 and 3, air layers are formed between the seal 7 and air so as to change the refractive index of light at the boundary lines of the air layers in order to erase the erasing regions 2 and 3, and the changeable picture pattern is realized.;COPYRIGHT: (C)2002,JPO
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