Strings are created by enclosing Unicode characters in double quotes. Strings are UTF-8 encoded.
Special characters
The only special character is ". You can put a double quote inside a string by escaping it with a backslash:
a = "I can put a quote character, \", in my string using a backslash"
A backslash is escaped with another one:
b = "I can end my string with a \\"
A newline (\n) requires a line break:
c = "And include a ' ' too!"
Other characters can be inserted literally (some text editors are better at this than others), or consider using chr().