typedef struct 	Keyboardctl Keyboardctl;typedef struct	Channel	Channel; struct	Keyboardctl{	Channel	*c;	/* chan(Rune)[20] */ 	char		*file;	int		consfd;		/* to cons file */	int		ctlfd;		/* to ctl file */	int		pid;		/* of slave proc */};  extern	Keyboardctl*	initkeyboard(char*);extern	int		ctlkeyboard(Keyboardctl*, char*);extern	void		closekeyboard(Keyboardctl*); enum {	KF=	0xF000,	/* Rune: beginning of private Unicode space */	Spec=	0xF800,	PF=	Spec|0x20,	/* num pad function key */	Kview=	Spec|0x00,	/* view (shift window up) */	/* KF|1, KF|2, ..., KF|0xC is F1, F2, ..., F12 */	Khome=	KF|0x0D,	Kup=	KF|0x0E,	Kdown=	Kview,	Kpgup=	KF|0x0F,	Kprint=	KF|0x10,	Kleft=	KF|0x11,	Kright=	KF|0x12,	Kpgdown=	KF|0x13,	Kins=	KF|0x14, 	Kalt=	KF|0x15,	Kshift=	KF|0x16,	Kctl=	KF|0x17, 	Kend=	KF|0x18,	Kscroll=	KF|0x19,	Kscrolloneup=	KF|0x20,	Kscrollonedown=	KF|0x21, 	Ksoh=	0x01,	Kstx=	0x02,	Ketx=	0x03,	Keof=	0x04,	Kenq=	0x05,	Kack=	0x06,	Kbs=	0x08,	Knack=	0x15,	Ketb=	0x17,	Kdel=	0x7f,	Kesc=	0x1b, 	Kbreak=	Spec|0x61,	Kcaps=	Spec|0x64,	Knum=	Spec|0x65,	Kmiddle=	Spec|0x66,	Kaltgr=	Spec|0x67,	Kmouse=	Spec|0x100,};