Diqing Tibetan Autonomous Prefecture County (formerly Weixi), and they all were under the administration of Lijiang. The Autonomous Prefecture was established in 1957 and named "Diqing" by its first governor. During the remainder of the 20th century, the prefecture's capital was called Zhongdian but was renamed on December 17, 2001 as Shangri-La City (other spellings: Semkyi'nyida, Xianggelila, or Xamgyi'nyilha) after the fictional land of Shangri-La in the 1933 James Hilton novel "Lost Horizon", with an eye toward promoting tourism in the area. On June 25, 2007 the Pudacuo National Park was established on in this prefecture. On January 11, 2014, there was a major
S-expression be formatted as pretty printed S-expressions using the function PPRINT (note: with two Ps, short for "pretty"-print). Lisp programs are valid s-expressions, but not all s-expressions are valid Lisp programs. codice_21 is a valid s-expression, but not a valid Lisp program, since Lisp uses prefix notation and a floating point number (here 1.0) is not valid as an operation (the first element of the expression). An S-expression preceded by a single quotation mark, as in codice_22, is syntactic sugar for a quoted S-expression, in this case codice_23. S-Expressions are often compared to XML, a key difference being that S-Expressions are