"\ N" ==> Wrap "\ R" ==> Enter "\ T" ==> horizontal tab "\\" ==> backslash "\ $" ==> dollar sign "\ '" ==> single quotes "\" "==> double quotes "\ [0-7] {1,3}" matches a regular expression character octal notation "\ X [0-9A-Fa-f] {1,2}" matches a regular expression character hexadecimal notation