According to the screen manual (version 4.0.2.)
C-a x C-a C-x (lockscreen) Lock this terminal. C-a X (remove) Kill the current region.
But what actually happens when I use it (Screen version 4.00.03 (FAU) 23-Oct-06):
C-a X locks the terminal and asks me for the password. When I enter the correct passwword, I am back in screen but the region is killed (wtf) C-a x does nothing apparently
Please note the differences between x (lowercase) and X (uppercase).
Why is there a mixup between the functionalities of C-a X and C-a x? How can I fix this?
I am on CentOS release 5 (Final).