I changed a small piece of text in my previous question. The alteration is an important one and warrants a separate question.
However, the system decides that I am posting the same question again and the button "Post your question" does not work.
What to do?
For the time being I appended a dummy text "This question is not a duplicate" to fool the system and was successful in posting the question - How to type S-<LEFT>.
Compare - How to type C-M