text: 
  #ifndef keyboard_osd_h_
  #define keyboard_osd_h_
      
  extern bool virtualkeyboardIsActive(void);
  extern void drawVirtualkeyboard(void);
  extern void toggleVirtualkeyboard(bool keepOn);
  extern void handleVirtualkeyboard(void);
  
  extern bool callibrationActive(void);
  extern int  handleCallibration(uint16_t bClick);
  
  extern bool menuActive(void);
  extern char * menuSelection(void);
  extern void toggleMenu(bool on);
  extern int  handleMenu(uint16_t bClick);
  
  
  #endif
  
  