Below each of the display spaces there are three buttons, each of which acts on the Spaceabove it. The buttons for the left Space are Edit combination, Add combination and Erasecombination; for the right Space, Edit keystroke, Add keystroke and Erase keystroke. Ineither case, before you can edit or erase, you must select the relevant combination inside theSpace.If you begin a new keymap, nothing appears in either of these Spaces; if you load a keymap,the contents of that keymap are loaded in the left display space, and then any combinationyou select in the left Space is displayed in the right display space.When you are editing, either in Interactive Mode or in the editing window, if you enter a newkey combination for an existing keymap, the previous keymap is overwritten with the newone.The last button on the main window is Interactive mode. This allows you to build a newkeymap, or edit an existing keymap, by using the BraillePen12 keyboard and the PCkeyboard to type the BraillePen12 keystrokes and their corresponding PC keyboardkeystrokes.Before you can use the Interactive mode, you have to either choose to start a new keymap orload an existing keymap; if you don't remember to do that, you will see an error messagereminding you:Once you have loaded a keymap or chosen to begin a new keymap, the Interactive windowwill appear, and BPConfig will begin searching for your BraillePen12 - make sure it is turnedon and Bluetooth is active.14Illustration 11: BPConfig Interactive Mode Error -no keymap loadedIllustration 12: BPConfig Bluetooth search screen.