Jack and Jill (nursery rhyme) and brown paper were a home cure used as a method to draw out bruises on the body. Jack is the most common name used in English-language nursery rhymes and represented an archetypal Everyman hero by the 18th century, while Jill or Gill had come to mean a young girl or a sweetheart by the end of the Middle Ages. However, the woodcut that accompanied the first recorded version of the rhyme showed two boys (not a boy and a girl) and used the spelling Gill not Jill. The true origin of the rhyme is unknown, but there are several
S-expression vary in the different languages, but the most common feature among these languages is the use of S-expressions and prefix notation. There are many variants of the S-expression format, supporting a variety of different syntaxes for different datatypes. The most widely supported are: The character codice_15 is often used to prefix extensions to the syntax, e.g. codice_16 for hexadecimal integers, or codice_17 for characters. When representing source code in Lisp, the first element of an S-expression is commonly an operator or function name and any remaining elements are treated as arguments. This is called "prefix notation" or "Polish notation". As