Interpretation and Restrictions
While csexps generally permit empty lists, empty atoms, and so forth, certain uses of csexps impose additional restrictions. For example, csexps as used in SPKI have one limitation compared to csexps in general: every list must start with an atom, and therefore there can be no empty lists.
Typically, a list's first atom is treated as one treats an element name in XML.
Read more about this topic: Canonical S-expressions
Famous quotes containing the words interpretation and:
“The syntactic component of a grammar must specify, for each sentence, a deep structure that determines its semantic interpretation and a surface structure that determines its phonetic interpretation.”
—Noam Chomsky (b. 1928)