| 摘要 |
A folder that provides an improvement in protection of papers in an easier and handier way, having slots, which are located in any of its backs, either in the corners or in any part of the edges, these slots allow us to hold documents in all the corners, locking the folder this way. This feature allows us to eliminate mechanisms and additional objects that perform these functions, so we obtain a simple and useful folder that prevents papers from falling or coming out, since it is vital to protect papers.
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