When I write Edit and press Enter, it asks me to enter the file name to edit (this works). After I write the file name, it prints the text that the file contains (this works too). For example, if there is a text inside a text file (which is, for example, "ABC"), it prints "ABC" in console, but I cannot edit this "ABC" text. I can't press Backspace to edit the text, or any letter. I can only add new letters right next to the text.