Pioneer DVD-V7400 Command Protocol Manual page 83

Explanation : The command fixes the button on the screen after executing the
CU command with an integer. The player executes the program that is
assigned to that button. This command emulates the "enter" key on the
remote control while the button is on the screen.
If the command is appropriate for the situation, the player returns immediately
"R<CR>"*.
If there are no buttons on the screen when the command is issued, an error
message (E04) is returned.
*: If the command is available, "R<CR>" appears on the screen immediately.
However, this does not confirm that the command is executed completely.
Execution :
String
2CU<CR>
ET<CR>
Function : emulates the "right" click of the mouse
Format : argument1, argument2 ET
Explanation : The command emulates the "right" click of the mouse while the
cursor is on the screen. The command specifies the position of the cursor
with two arguments. The upper left on the screen is (0,0), the lower right on
the screen is (719, 479) for NTSC playback, or (719, 575) for PAL. The
format is stated below.
Argument1
000000
X X X Y Y Y
1 2 3 1 2
If the arguments are available, the player immediately returns "R<CR>"*.
If the argument number is unavailable, an error message (E06) is returned.
* The return "R<CR>" refers only to checking for an argument number. The
player is incapable of verifying the existence of a button with this command.
Status Return
R<CR>
R<CR>
Argument 2
719479
3
- 76
Current Address Request Descriptions
DVD player
Shows the disc menu
Moves to the below
button from the prior one
Fixes the selection and
executes the program
that is assigned on it
Position
Upper left limitation on the screen
Lower right limitation on the screen
Anywhere on the screen