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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML Strict//EN"><HTML><HEAD><TITLE>SX</TITLE></HEAD><BODY><H1>SX</H1><H4>An SGML System Conforming toInternational Standard ISO 8879 --<BR>Standard Generalized Markup Language</H4><H2>SYNOPSIS</H2><P><CODE>sx</CODE>[<CODE>-Cehilprvx</CODE>][<CODE>-b<VAR>encoding</VAR></CODE>][<CODE>-c<VAR>catalog_file</VAR></CODE>][<CODE>-D<VAR>directory</VAR></CODE>][<CODE>-f<VAR>file</VAR></CODE>][<CODE>-w<VAR>warning_type</VAR></CODE>][<CODE>-x<VAR>xml_output_option</VAR></CODE>]<CODE><VAR>sysid...</VAR></CODE><H2>DESCRIPTION</H2><P>SX converts SGML to XML.SX parses and validates the SGML document contained in<CODE><VAR>sysid...</VAR></CODE>and writes an equivalent XML document to the standard output.SX will warn about SGML constructs which have no XML equivalent.<P>The following options are available:<DL><DT><CODE>-b<VAR>encoding</VAR></CODE><DD>Use <A HREF="charset.htm#encodings"><CODE><VAR>encoding</VAR></CODE></A> for output.By default SX uses UTF-8.<DT><CODE>-c<VAR>file</VAR></CODE><DD>Use the catalog entry file<CODE><VAR>file</VAR></CODE>.<DT><CODE>-C</CODE><DD>This has the same effect as in <A HREF="nsgmls.htm#optC">nsgmls</A>.<DT><CODE>-D<VAR>directory</VAR></CODE><DD>Search<CODE><VAR>directory</VAR></CODE>for files specified in system identifiers.This has the same effect as in <A HREF="nsgmls.htm#optD">nsgmls</A>.<DT><CODE>-e</CODE><DD>Describe open entities in error messages.<DT><CODE>-f<VAR>file</VAR></CODE><DD>Redirect errors to<CODE><VAR>file</VAR></CODE>.This is useful mainly with shells that do not support redirectionof stderr.<DT><CODE>-i<VAR>name</VAR></CODE><DD>This has the same effect as in <A HREF="nsgmls.htm#opti">nsgmls</A>.<DT><CODE>-v</CODE><DD>Print the version number.<DT><CODE>-w<VAR>type</VAR></CODE><DD>Control warnings and errors according to<CODE><VAR>type</VAR></CODE>.This has the same effect as in <A HREF="nsgmls.htm#optw">nsgmls</A>.<DT><CODE>-x<VAR>xml_output_option</VAR></CODE><DD>Control the XML output according to the value of<CODE><VAR>xml_output_option</VAR></CODE> as follows:<DL><DT><CODE>no-nl-in-tag</CODE><DD>Don't use newlines inside start-tags.Usually SX uses newlines inside start-tags so as to reduce theprobability of excessively long lines.<DT><CODE>id</CODE><DD>Output attribute declarations for ID attributes.<DT><CODE>notation</CODE><DD>Output declarations for notations.<DT><CODE>ndata</CODE><DD>Output declarations for external data entities.XML requires these to be NDATA.SX will warn about CDATA and SDATA external data entities andoutput them as NDATA entities.<DT><CODE>cdata</CODE><DD>Use XML CDATA sections for CDATA marked sections and for elements with adeclared content of CDATA.<DT><CODE>comment</CODE><DD>Output comment declarations. Comment declarations in the DTD will notbe output.<DT><CODE>lower</CODE><DD>Prefer lower case.Names that were subjected to upper-case substitution by SGML will be foldedto lower case.This does not include reserved names; XML requires these to be in upper-case.<DT><CODE>pi-escape</CODE><DD>Escape <CODE>&<></CODE> in the contents of processinginstructions using the <CODE>amp</CODE>, <CODE>lt</CODE> and<CODE>gt</CODE> entities. This allows processing instructions tocontain the string <CODE>>?</CODE>, but requires that applicationshandle the escapes.<DT><CODE>empty</CODE><DD>Use the <CODE><<VAR>e</VAR>/></CODE> syntax for element types<CODE><VAR>e</VAR></CODE> declared as EMPTY.<DT><CODE>attlist</CODE><DD>Output a ATTLIST declaration for every element specifying the type ofall attributes. The default will always be <CODE>#IMPLIED</CODE>.</DL><P>Multiple<CODE>-x</CODE>options are allowed.</DL><P><ADDRESS>James Clark<BR>jjc@jclark.com</ADDRESS></BODY></HTML>⌨️ 快捷键说明
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