This is a fenced code block:

pairs :: [(Int,Char)]
pairs = [(x,y) | x <- [0..10], y <- ['a'..'z']]

Here is one with tildes:

pairs :: [(Int,Char)]
pairs = [(x,y) | x <- [0..10], y <- ['a'..'z']]

More metadata:

pairs :: [(Int,Char)]
pairs = [(x,y) | x <- [0..10], y <- ['a'..'z']]

More backticks:

pairs :: [(Int,Char)]
pairs = [(x,y) | x <- [0..10], y <- ['a'..'z']]

backticks :: String
backticks = "`````"

Without an end:

code with
no end