'a'                                              // character literal
'\n'                                             // also a character literal
"foo\nbar"                                       // string literal
@"x\n"                                           // same as "x\\n"
@"x
 y"                                              // same as "x\n y"
@"""Hi!"""                                       // "" replaces \" to escape a literal quote mark
<#This string type can contain any symbols including "
and new lines. It does not support escape codes
like "\n".#>                                     // same as "This string type can contain any symbols including \"\nand new lines. "
                                                 //       + "It does not\nsupport escape codes\nlike \"\\n\"."
<#Test <# Inner #> end#>                         // same as "Test <# Inner #> end" (i.e. this string type support recursion.