Normal
This is no longer related to the KeyboardInputPlugin and thus off-topic, but anyway:General -> Keys and Sounds:You can change key assignments in 'Keys and Sounds' by selecting the root assignment node and then clicking in the Key entry field. E.g. don't select the Key node, but its parent node.The standard 'Toggle between GUI and fullscreen' assignment is mapped to the ACTION_SHOW_GUI action. I don't know exactly what this does, but I don't think it toggles between windowed and full-screen mode. You need the ACTION_TOGGLE_WINDOWED_FULLSCREEN action for that (note that actions are listed in non-alphabetical order).I don't know whether the * key is already mapped to something; please make sure you don't have two mappings for the same key. You can either delete the existing mapping (if any) or edit its action.Given the information above, I would do the following: Delete any existing assignment for the '*' key, then select the Global Actions node, then click the Add button. Add a description, select ACTION_TOGGLE_WINDOWED_FULLSCREEN for Action, select the Key field and type *.MCE Remote mapping:You can fully expand an existing button node and then assign the 'Toggle Windowed Fullscreen' action to that button on the right hand side of the window.You cannot add new buttons to MP's built-in remote mappings; the New button is only there for adding layers/conditions.I guess the number keys are not in the MCE remote mapping because they act as regular number keys (and thus are handled by the regular 'Keys and Sounds' mappings).
This is no longer related to the KeyboardInputPlugin and thus off-topic, but anyway: