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Editing: sgmlsout.htm (11.28 KB)

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML Strict//EN">
<HTML>
<HEAD>
<TITLE>Onsgmls Output Format</TITLE>
</HEAD>
<BODY>
<H1>Onsgmls Output Format</H1>
<P>
The output is a series of lines.
Lines can be arbitrarily long.
Each line consists of an initial command character
and one or more arguments.
Arguments are separated by a single space,
but when a command takes a fixed number of arguments
the last argument can contain spaces.
There is no space between the command character and the first argument.
Arguments can contain the following escape sequences:
<DL>
<DT>
<CODE>\\</CODE>
<DD>
A
<CODE>\</CODE>.
<DT>
<CODE>\n</CODE>
<DD>
A record end character.
<DT>
<CODE>\|</CODE>
<DD>
Internal SDATA entities are bracketed by these.
<DT>
<CODE>\<VAR>nnn</VAR></CODE>
<DD>
The character whose code is
<CODE><VAR>nnn</VAR></CODE>
octal.
<P>
A record start character will be represented by
<CODE>\012</CODE>.
Most applications will need to ignore
<CODE>\012</CODE>
and translate
<CODE>\n</CODE>
into newline.
<DT>
<CODE>\#<VAR>n</VAR>;</CODE>
<DD>
The character whose number is
<CODE><VAR>n</VAR></CODE>
decimal in the internal character set.
<CODE><VAR>n</VAR></CODE>
can have any number of digits.
This is used for characters that are not representable by the
encoding used for output.
This will only occur with the multibyte version of nsgmls.
<DT>
<CODE>\%<VAR>n</VAR>;</CODE>
<DD>
The character whose number is
<CODE><VAR>n</VAR></CODE>
decimal in the document character set.
<CODE><VAR>n</VAR></CODE>
can have any number of digits.
This is used for data characters resulting from numeric
character references to non-SGML characters
in <A HREF="charset.htm#fixed">fixed character set mode</A>.
</DL>
<P>
The possible command characters and arguments are as follows:
<DL>
<DT>
<CODE>(<VAR>gi</VAR></CODE>
<DD>
The start of an element whose generic identifier is
<CODE><VAR>gi</VAR></CODE>.
Any attributes for this element
will have been specified with
<CODE>A</CODE>
commands.
<DT>
<CODE>)<VAR>gi</VAR></CODE>
<DD>
The end of an element whose generic identifier is
<CODE><VAR>gi</VAR></CODE>.
<DT>
<CODE>-<VAR>data</VAR></CODE>
<DD>
Data.
<DT>
<CODE>&amp;<VAR>name</VAR></CODE>
<DD>
A reference to an external data entity
<CODE><VAR>name</VAR></CODE>;
<CODE><VAR>name</VAR></CODE>
will have been defined using an
<CODE>E</CODE>
command.
<DT>
<CODE>?<VAR>pi</VAR></CODE>
<DD>
A processing instruction with data
<CODE><VAR>pi</VAR></CODE>.
<DT>
<CODE>A<VAR>name</VAR> <VAR>val</VAR></CODE>
<DD>
The next element to start has an attribute
<CODE><VAR>name</VAR></CODE>
with value
<CODE><VAR>val</VAR></CODE>
which takes one of the following forms:
<DL>
<DT>
<CODE>IMPLIED</CODE>
<DD>
The value of the attribute is implied.
<DT>
<CODE>CDATA <VAR>data</VAR></CODE>
<DD>
The attribute is character data.
This is used for attributes whose declared value is
<CODE>CDATA</CODE>.
<DT>
<CODE>NOTATION <VAR>nname</VAR></CODE>
<DD>
The attribute is a notation name;
<CODE><VAR>nname</VAR></CODE>
will have been defined using a
<CODE>N</CODE>
command.
This is used for attributes whose declared value is
<CODE>NOTATION</CODE>.
<DT>
<CODE>ENTITY <VAR>name...</VAR></CODE>
<DD>
The attribute is a list of general entity names.
Each entity name will have been defined using an
<CODE>I</CODE>,
<CODE>E</CODE>
or
<CODE>S</CODE>
command.
This is used for attributes whose declared value is
<CODE>ENTITY</CODE>
or
<CODE>ENTITIES</CODE>.
<DT>
<CODE>TOKEN <VAR>token...</VAR></CODE>
<DD>
The attribute is a list of tokens.
This is used for attributes whose declared value is anything else.
<DT>
<CODE>ID <VAR>token</VAR></CODE>
<DD>
The attribute is an ID value.
This will be output only if the
<CODE>-oid</CODE>
option is specified.
Otherwise
<CODE>TOKEN</CODE>
will be used for ID values.

<DT>
<CODE>DATA <VAR>nname</VAR> <VAR>data</VAR></CODE>
<DD>
The attribute is character data with an associated notation.
The definition of the notation and any applicable attributes of the notation
will be given using subsequent <CODE>D<VAR>name</VAR> <VAR>val</VAR></CODE> 
lines. This is used for attributes whose declared value is <CODE>DATA</CODE>. 
It will be output only if the <CODE>-odata-attribute</CODE>
option is specified. Otherwise <CODE>CDATA</CODE> will be used for DATA values.
<DT>

</DL>
<DT>
<CODE>D<VAR>ename</VAR> <VAR>name</VAR> <VAR>val</VAR></CODE>
<DD>
This is the same as the
<CODE>A</CODE>
command, except that it specifies a data attribute for an
external entity named
<CODE><VAR>ename</VAR></CODE>.
Any
<CODE>D</CODE>
commands will come after the
<CODE>E</CODE>
command that defines the entity to which they apply, but
before any
<CODE>&amp;</CODE>
or
<CODE>A</CODE>
commands that reference the entity.
<DT>
<CODE>a<VAR>type</VAR> <VAR>name</VAR> <VAR>val</VAR></CODE>
<DD>
The next element to start has a link attribute with link type
<CODE><VAR>type</VAR></CODE>,
name
<CODE><VAR>name</VAR></CODE>,
and value
<CODE><VAR>val</VAR></CODE>,
which takes the same form as with the
<CODE>A</CODE>
command.
<DT>
<CODE>N<VAR>nname</VAR></CODE>
<DD>
Define a notation <CODE><VAR>nname</VAR></CODE>.
This command will be preceded by a
<CODE>p</CODE>
command if the notation was declared with a public identifier,
and by a
<CODE>s</CODE>
command if the notation was declared with a system identifier.
If the
<CODE>-onotation-sysid</CODE>
option was specified,
this command will also be preceded by an
<CODE>f</CODE>
command giving the system identifier generated by the entity manager
(unless it was unable to generate one).
A notation will only be defined if it is to be referenced
in an
<CODE>E</CODE>
command or in an
<CODE>A</CODE>
command for an attribute with a declared value of
<CODE>NOTATION</CODE>.
<DT>
<CODE>E<VAR>ename</VAR> <VAR>typ</VAR> <VAR>nname</VAR></CODE>
<DD>
Define an external data entity named
<CODE><VAR>ename</VAR></CODE>
with type
<CODE><VAR>typ</VAR></CODE>
(<CODE>CDATA</CODE>, <CODE>NDATA</CODE> or <CODE>SDATA</CODE>)
and notation <CODE><VAR>not</VAR></CODE>.
Thiscommand will be preceded by an
<CODE>f</CODE>
command giving the system identifier generated by the entity manager
(unless it was unable to generate one),
by a
<CODE>p</CODE>
command if a public identifier was declared for the entity,
and by a
<CODE>s</CODE>
command if a system identifier was declared for the entity.
<CODE><VAR>not</VAR></CODE>
will have been defined using a
<CODE>N</CODE>
command.
Data attributes may be specified for the entity using
<CODE>D</CODE>
commands.
If the
<CODE>-oentity</CODE>
option is not specified,
an external data entity will only be defined if it is to be referenced in a
<CODE>&amp;</CODE>
command or in an
<CODE>A</CODE>
command for an attribute whose declared value is
<CODE>ENTITY</CODE>
or
<CODE>ENTITIES</CODE>.
<DT>
<CODE>I<VAR>ename</VAR> <VAR>typ</VAR> <VAR>text</VAR></CODE>
<DD>
Define an internal data entity named
<CODE><VAR>ename</VAR></CODE>
with type
<CODE><VAR>typ</VAR></CODE>
and entity text
<CODE><VAR>text</VAR></CODE>.
The
<CODE><VAR>typ</VAR></CODE>
will be
<CODE>CDATA</CODE>
or
<CODE>SDATA</CODE>
unless the
<CODE>-oentity</CODE>
option was specified,
in which case it can also be
<CODE>PI</CODE>
or
<CODE>TEXT</CODE>
(for an SGML text entity).
If the
<CODE>-oentity</CODE>
option is not specified,
an internal data entity will only be defined if it is referenced in an
<CODE>A</CODE>
command for an attribute whose declared value is
<CODE>ENTITY</CODE>
or
<CODE>ENTITIES</CODE>.
<DT>
<CODE>S<VAR>ename</VAR></CODE>
<DD>
Define a subdocument entity named
<CODE><VAR>ename</VAR></CODE>.
This command will be preceded by an
<CODE>f</CODE>
command giving the system identifier generated by the entity manager
(unless it was unable to generate one),
by a
<CODE>p</CODE>
command if a public identifier was declared for the entity,
and by a
<CODE>s</CODE>
command if a system identifier was declared for the entity.
If the
<CODE>-oentity</CODE>
option is not specified,
a subdocument entity will only be defined if it is referenced
in a
<CODE>{</CODE>
command
or in an
<CODE>A</CODE>
command for an attribute whose declared value is
<CODE>ENTITY</CODE>
or
<CODE>ENTITIES</CODE>.
<DT>
<CODE>T<VAR>ename</VAR></CODE>
<DD>
Define an external SGML text entity named
<CODE><VAR>ename</VAR></CODE>.
This command will be preceded by an
<CODE>f</CODE>
command giving the system identifier generated by the entity manager
(unless it was unable to generate one),
by a
<CODE>p</CODE>
command if a public identifier was declared for the entity,
and by a
<CODE>s</CODE>
command if a system identifier was declared for the entity.
This command will be output only if the
<CODE>-oentity</CODE>
option is specified.
<DT>
<CODE>s<VAR>sysid</VAR></CODE>
<DD>
This command applies to the next
<CODE>E</CODE>,
<CODE>S</CODE>,
<CODE>T</CODE>
or
<CODE>N</CODE>
command and specifies the associated system identifier.
<DT>
<CODE>p<VAR>pubid</VAR></CODE>
<DD>
This command applies to the next
<CODE>E</CODE>,
<CODE>S</CODE>,
<CODE>T</CODE>
or
<CODE>N</CODE>
command and specifies the associated public identifier.
<DT>
<CODE>f<VAR>sysid</VAR></CODE>
<DD>
This command applies to the next
<CODE>E</CODE>,
<CODE>S</CODE>,
<CODE>T</CODE>
or, if the
<CODE>-onotation-sysid</CODE>
option was specified,
<CODE>N</CODE>
command and specifies the system identifier
generated by the entity manager from the specified external identifier
and other information about the entity or notation.
<DT>
<CODE>{<VAR>ename</VAR></CODE>
<DD>
The start of the SGML subdocument entity
<CODE><VAR>ename</VAR></CODE>;
<CODE><VAR>ename</VAR></CODE>
will have been defined using a
<CODE>S</CODE>
command.
<DT>
<CODE>}<VAR>ename</VAR></CODE>
<DD>
The end of the SGML subdocument entity
<CODE><VAR>ename</VAR></CODE>.
<DT>
<CODE>L<VAR>lineno</VAR> <VAR>file</VAR></CODE>
<DT>
<CODE>L<VAR>lineno</VAR></CODE>
<DD>
Set the current line number and filename.
The
<CODE><VAR>file</VAR></CODE>
argument will be omitted if only the line number has changed.
This will be output only if the
<CODE>-l</CODE>
option has been given.
<DT>
<CODE>#<VAR>text</VAR></CODE>
<DD>
An APPINFO parameter of
<CODE><VAR>text</VAR></CODE>
was specified in the SGML declaration.
This is not strictly part of the ESIS, but a structure-controlled
application is permitted to act on it.
No
<CODE>#</CODE>
command will be output if
<CODE>APPINFO NONE</CODE>
was specified.
A
<CODE>#</CODE>
command will occur at most once,
and may be preceded only by a single
<CODE>L</CODE>
command.
<DT>
<CODE>C</CODE>
<DD>
This command indicates that the document was a conforming SGML document.
If this command is output, it will be the last command.
An SGML document is not conforming if it references a subdocument entity
that is not conforming.
<DT>
<CODE>i</CODE>
<DD>
The next element to start is an included subelement.
This will be output only if the
<CODE>-oincluded</CODE>
option is specified.
<DT>
<CODE>e</CODE>
<DD>
The next element to start has a declared content of EMPTY or a content
reference attribute, and so its end-tag must be omitted.
This will be output only if the
<CODE>-oempty</CODE>
option is specified.
<DT>
<CODE>_<VAR>comment</VAR></CODE>
<DD>
A comment with data
<CODE><VAR>comment</VAR></CODE>.
This will be output only if the
<CODE>-ocomment</CODE>
option is specified.
<DT>
<CODE>o</CODE>
<DD>
The actual markup for the next
<CODE>(</CODE>,
<CODE>)</CODE>,
or
<CODE>A</CODE>
command was omitted from the input.
This will be output only if one of the
<CODE>-oomitted</CODE>,
<CODE>-otagomit</CODE>,
or
<CODE>-oattromit</CODE>
options is specified.
</DL>
</BODY>
</HTML>