| 摘要 |
The bundle of sheets, which can be fitted on to all types of existing supports with or without a base simply by turning it over, consists of a hinge (10) opposite holes (4) and/or of other holes (8) on the same side as this hinge (10). Hooks (12) engaged in the holes (4) of the said bundle enable a rapid system of leafing through the sheets by slipping them off, by virtue of the hinge (10), this taking place without having to take down the assembly. <IMAGE>
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