| 摘要 |
It comprises a plurality of guide bars (10) on which are marked boxes (18) intended to contain the information relating to the corresponding special keys (21), two assembly and positioning means (12) for the guide bars, making it possible to keep them together and to position them on the keyboard in such a way that the boxes (18) of each of the guide bars are opposite the keys to which they have been allocated. The assembly and positioning means (12) are themselves mounted on the keyboard by means of a support and provide guidance with pivoting and holding of the guide bars between an active position in which the guide bar in question is facing the keys to be identified and an inactive position in which it is tilted to the other side of the said means (12). <IMAGE>
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