By pressing the command button "Inv.Rtt" on the upper right of the window, or the [Y] key, you can invert the entire map data, partially inversion, or rotate the entire map.
If you want to create another map which structure is the exact opposite like a mirror image, this command would be so useful one, I guess.
The blue letters displayed to the right of the buttons indicate the key assignments for each command.
(Mainly assigned to [Z] to [M] on the bottom of the main keyboard.)
Press the "Abort" button or the [Enter] key to abort this operation and return to the edit screen.
If you select "Invert whole map data", you'll need to select one of the following 3 "invert direction" from the combo box on the next screen.
After selecting one of these 3 item, if you press the "OK" button or the [Z] key, the inversion process will be performed.
Incidentally, this inverting process will be only done for the currently editing map side, won't for the other non-editing map side.
On the other hand, if you select "Invert data in range", the above processing will be performed in the currently specified range.
(This command can't be operated if the specified range isn't set.)
If you press "Reinput" button or the [X] key, you will return to the previous screen.
Pressing the "Redo" button or the [C] key returns to the top screen of this command screen.
Even also you will return to the top screen by selecting "Don't invert" and pressing "OK" button or the [Z] key.
Press the "Abort" button or the [Enter] key to abort this operation and return to the edit screen.
If you select "Rotate Map", you'll need to select one of the following 3 "rotate direction" from the combo box on the next screen.
After selecting one of these 3 items, if you press the "OK" button or the [Z] key, the rotation process will be performed.
This rotation process will be done for both maps 1 and 2.
(By the way, "Rotate 180 degrees" will be the same result as "Invert Horizon and Vertical direction" in the above "Invert" process.)
If you press "Reinput" button or the [X] key, you will return to the previous screen.
Pressing the "Redo" button or the [C] key returns to the top screen of this command screen.
Even also you will return to the top screen by selecting "Don't rotate" and pressing "OK" button or the [Z] key.
Press the "Abort" button or the [Enter] key to abort this operation and return to the edit screen.