--- ray/src/rt/driver.h	1990/02/22 11:46:09	1.6
+++ ray/src/rt/driver.h	1993/04/05 15:16:46	2.2
@@ -24,7 +24,8 @@ struct driver {				/* driver functions */
 extern int  stderr_v();			/* error vectors */
 extern int  (*wrnvec)(), (*errvec)(), (*cmdvec)();
 
-extern struct driver  *comm_init();	/* stream interface */
+					/* stream interface */
+extern struct driver  *comm_init(), *slave_init();
 					/* magic numbers for verification */
 #define COM_SENDM		0x6f37
 #define COM_RECVM		0x51da
@@ -43,6 +44,8 @@ extern struct device {			/* interactive device */
 	struct driver  *(*init)();		/* initialize device */
 }  devtable[];				/* supported devices */
 
+extern char  dev_default[];		/* default device name */
+
 #define  MB1		('\n')		/* mouse button 1 */
 #define  MB2		('\r')		/* mouse button 2 */
 #define  MB3		(' ')		/* mouse button 3 */
@@ -101,7 +104,7 @@ extern struct device {			/* interactive device */
  *	assuming the in buffer is big enough.  Unless prompt is NULL,
  *	the driver may substitute its own rview command.  This is
  *	the most reliable way to repaint areas of the screen.
- *	If the user enters an unrecognized control character is entered,
+ *	If the user enters an unrecognized control character,
  *	terminate input and return the string with only that character.
  *	The input string should not contain a newline.  The routines in
  *	editline.c may be useful.  Comin must work in consort with comout.