主要是对文件的一些操作:加密、解密文件，加密、解密可运行文件，批量更名，文件比较，文件分割 -mainly for the operation of paper : encryption, decryption, encryption, decryption can run files, batch renaming, Document, document segmentation

This paper presents a text line segmentation method for printed or handwritten historical Arabic documents. Documents are first classified into 2 classes using a K-means scheme. These classes correspond to document complexity (easy or not eas