PiPO S1 - Manual (Page 16)

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Ⅷ .... Explorer Explorer Explorer Explorer
In Explorer , you can manage all your files. You can copy, delete,
paste, or rename your files in your Micro SD card, Internal Memory and
USB disk.
For example, to copy files from "Internal Memory" to micro "SD card":
1, Open "explorer" you will see the above interface
2, tab "Internal Memory" to see files in your tablet
3, Tab "Multi" icon and then select the files you want to edit
4, Tab "Editor" icon, you will see a pop-up menu, select "copy"