RE: XML Syntax/Grammar

[Michael Fitzgerald <mike@wyeast.net>]

BNF refers to the Backus-Nauer Form. XML 1.0 is described in Extended
Backus-Nauer Form (EBNF). Here is an example of EBNF from the XML
recommendation:

[3]    S    ::=    (#x20 | #x9 | #xD | #xA)+

This production means that the symbol /S/ stands for one or more occurrences
(+) of either the space (x20), the tab (x9), the linefeed (x0A), and the
carriage return (x09) characters. Whenever the /S/ shows up in the EBNF, it
represents space as described by the production [3].

See the XML recommendation [1] for a brief description of EBNF notation; see
ISO/IEC 14977 [2] for a complete description.

[1] http://www.w3.org/TR/REC-xml#sec-notation
[2] http://www.cl.cam.ac.uk/~mgk25/iso-ebnf.html

Best of luck,

Mike

-----Original Message-----
From: Xu, Mousheng (SEA) [mailto:Mousheng.Xu@sea.celltechgroup.com]
Sent: Wednesday, July 11, 2001 12:01 PM
To: xml-dev@lists.xml.org
Subject: XML Syntax/Grammar


Hi there,

What is the BNF of XML document?

Thanks.

-- Mousheng Xu


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