James Hilton (novelist) Horizon" titled "Shangri-La" and written by Eleanor Cooney and Daniel Altieri. It was licensed by the publisher William Morrow (an imprint of Harper Collins) and approved by the heirs to the Hilton Estate, Elizabeth Hill and Mary Porterfield. "Shangri-La" continues James Hilton's tale, moving it forward in time to the Cultural Revolution of the 1960s and from there travelling back to the 1930s. In addition to its U.S. publication, the novel was further published in Germany, France, Spain and Portugal and was a "New York Times" Notable Book. A furore was caused in the late 1990s, when Wigan Council (the
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