Text fixes.

README

 videohubctrl - Blackmagic Videohub control application
 ======================================================
 
-Blackmagic Design Videohub is SDI router device which can be controlled
-over the network using very simple text based protocol which
-videohubctrl implements.
-
-videohubctrl is tested with Blackmagic Design Micro Videohub 16x16
+videohubctrl implements the simple text based network protocol for
+controlling Blackmagic Design Videohub SDI router devices. The
+program is tested with Blackmagic Design Micro Videohub 16x16
 router and probably will work with other Videohub models.
 
 videohubctrl currently displays and can configure:
   - Video output routing
   - Video output locking
 
-The following features found in bigger Videohub models are currently not
-supported (I don't have the hardware):
+The following features found in bigger Videohub models are currently
+not supported (I don't have the hardware):
 
   - Configuration of video processing units
   - Configuration of Video monitoring outputs
  Usage: videohubctrl --host <host> [..commands..]
 
 Main options:
- -h --host <hostname>       | Set device hostname.
+ -h --host <host>           | Set device host name.
  -p --port <port_number>    | Set device port (default: 9990).
 
 Commands:
  -i --info                  | Show full device info (default command).
-                            . This command is shows the equivallent of
+                            . This command is shows the equivalent of
                             .  running all --list-XXX commands.
  -m --monitor               | Display real-time config changes monitor.
  -b --backup                | Show the command line that will restore
  --vo-lock <out_X>          | Lock output port X.
  --vo-unlock <out_X>        | Unlock output port X.
 
-  NOTE: For <in_X/out_X/in_Y> you may use port number or port name.
+   For <in_X/out_X/in_Y> you may use port number or port name.
 
 Misc options:
  -d --debug                 | Increase logging verbosity.
 if they are set:
 
  VIDEOHUB_HOST
-    Sets the device host name. It is equivallent to using -h / --host
+    Sets the device host name. It is equivalent to using -h / --host
     command line parameter.
 
  VIDEOHUB_PORT
-    Sets the device port. It is equivallent to using -p / --port command
+    Sets the device port. It is equivalent to using -p / --port command
     line parameter.
 
 
 
 
  # Lock and then unlock output 16 (unlock assumes that the port is
- # named Output 16). The hostname is set via env variable.
+ # named Output 16). The host name is set via env variable.
 
    export VIDEOHUB_HOST=sdi
    videohubctrl --vo-lock 16

videohubctrl.c

 	printf(" Usage: " PROGRAM_NAME " --host <host> [..commands..]\n");
 	printf("\n");
 	printf("Main options:\n");
-	printf(" -h --host <hostname>       | Set device hostname.\n");
+	printf(" -h --host <host>           | Set device host name.\n");
 	printf(" -p --port <port_number>    | Set device port (default: 9990).\n");
 	printf("\n");
 	printf("Commands:\n");
 	printf(" -i --info                  | Show full device info (default command).\n");
-	printf("                            . This command is shows the equivallent of\n");
+	printf("                            . This command is shows the equivalent of\n");
 	printf("                            .  running all --list-XXX commands.\n");
 	printf(" -m --monitor               | Display real-time config changes monitor.\n");
 	printf(" -b --backup                | Show the command line that will restore\n");
 	printf(" --vo-lock <out_X>          | Lock output port X.\n");
 	printf(" --vo-unlock <out_X>        | Unlock output port X.\n");
 	printf("\n");
-	printf("  NOTE: For <in_X/out_X/in_Y> you may use port number or port name.\n");
+	printf("   For <in_X/out_X/in_Y> you may use port number or port name.\n");
 	printf("\n");
 	printf("Misc options:\n");
 	printf(" -d --debug                 | Increase logging verbosity.\n");