Today I was looking for the meaning of 'Roger' in radio conversation then I found this question. What's strange is that it is marked as a duplicate of What does “Roger” mean in war movies?, but this question has been removed!
This subject has already been discussed in StackOverflow's Meta, but I'm not sure what should be done to the duplicate question (of no other, currently). Should it be also removed? Should it cease to be a duplicate (is that even possible)? Leave everything is it is now?