I have been using Total comander for 6 years now and I use a lot Ctrl+right arrow to display the contens of my left window into the right window (the same with the left)
I have seen that in Opus there is a small button called "Display this folder in the other file display". Can anyone give me a hint on what code to use on program this keys.
You could also use {leftpath} and {rightpath} if you want to create hotkeys that always move left -> right and right -> left irrespective of which side is source.