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ONSGMLS(1)			   Reference			    ONSGMLS(1)

       onsgmls - An SGML/XML parser and validator

       onsgmls [-BCdeghlnpRrsuvx] [-alinktype] [-Aarchitecture] [-bbctf]
	       [-csysid...] [-Ddirectory] [-Emax_errors] [-ffile] [-iname]
	       [-ooutput_option...] [-tfile] [-wwarning_type...] [sysid...]

       onsgmls parses and validates the SGML document whose document entity is
       specified by the system identifiers

       and prints on the standard output a simple text representation of its
	Element Structure Information Set. (This is the information set which
	a structure-controlled conforming SGML application should act upon.)
	If more than one system identifier is specified, then the
	corresponding entities will be concatenated to form the document
	entity. Thus the document entity may be spread among several files;
	for example, the SGML declaration, prolog and document instance set
	could each be in a separate file. If no system identifiers are
	specified, then onsgmls will read the document entity from the
	standard input. A command line system identifier of - can be used to
	refer to the standard input. (Normally in a system identifier, <OSFD>0
	is used to refer to standard input.)

       Part of an SGML System Conforming to International Standard ISO 8879 --
       Standard Generalized Markup Language. An SGML Extended Facilities
       system conforming to Annex A of Internal Standard ISO/IEC 10744 --
       Hypermedia/Time-based Structuring Language

       The following options are available:

       -alinktype, --activate=linktype
	   Make link type linktype active. Not all ESIS information is output
	   in this case: the active LPDs are not explicitly reported, although
	   each link attribute is qualified with its link type name; there is
	   no information about result elements; when there are multiple link
	   rules applicable to the current element, onsgmls always chooses the

       -Aarchitecture, --architecture=architecture
	   Parse with respect to architecture architecture.

       -bbctf, --bctf=bctf, -bencoding, --encoding=encoding
	   This determines the encoding used for output. If in fixed character
	   set mode it specifies the name of an encoding; if not, it specifies
	   the name of a BCTF.

       -B, --batch_mode
	   Batch mode. Parse each

	   specified on the command line separately, rather than concatenating
	    them. This is useful mainly with -s.

	    If -tfilename is also specified, then the specified filename will
	    be prefixed to the sysid to make the filename for the RAST result
	    for each sysid.

       -csysid, --catalog=sysid
	   Map public identifiers and entity names to system identifiers using
	   the catalog entry file whose system identifier is sysid. Multiple
	   -c options are allowed. If there is a catalog entry file called
	   catalog in the same place as the document entity, it will be
	   searched for immediately after those specified by -c.

       -C, --catalogs

	   arguments specify catalog files rather than the document entity.
	    The document entity is specified by the first DOCUMENT entry in
	    the catalog files.

       -Ddirectory, --directory=directory
	   Search directory for files specified in system identifiers.
	   Multiple -D options are allowed. See the description of the osfile
	   storage manager for more information about file searching.

       -e, --open-entities
	   Describe open entities in error messages. Error messages always
	   include the position of the most recently opened external entity.

       -Emax_errors, --max-errors=max_errors
	   onsgmls will exit after max_errors errors. If max_errors is 0,
	   there is no limit on the number of errors. The default is 200.

       -ffile, --error-file=file
	   Redirect errors to file. This is useful mainly with shells that do
	   not support redirection of stderr.

       -g, --open-elements
	   Show the generic identifiers of open elements in error messages.

       -h, --help
	   Show a help message and exit.

       -iname, --include=name
	   Pretend that

	   <!ENTITY % name "INCLUDE">

	   occurs at the start of the document type declaration subset in the
	   SGML document entity. Since repeated definitions of an entity are
	   ignored, this definition will take precedence over any other
	   definitions of this entity in the document type declaration.
	   Multiple -i options are allowed. If the SGML declaration replaces
	   the reserved name INCLUDE then the new reserved name will be the
	   replacement text of the entity. Typically the document type
	   declaration will contain

	   <!ENTITY % name "IGNORE">

	   and will use %name; in the status keyword specification of a marked
	   section declaration. In this case the effect of the option will be
	   to cause the marked section not to be ignored.

       -n, --error-numbers
	   Show message numbers in error messages.

       -ooutput_option, --option=output_option
	   Output additional information according to output_option:

	   entity Output definitions of all general entities not just for data
	   or subdoc entities that are referenced or named in an ENTITY or
	   ENTITIES attribute.

	   id Distinguish attributes whose declared value is ID.

	   line Output L commands giving the current line number and filename.

	   included Output an i command for included sub-elements.

	   empty Output an e command for elements which are not allowed to
	   have an end-tag, that is those with a declared content of empty or
	   with a content reference attribute.

	   notation-sysid Output an f command before an N command, if a system
	   identifier could be generated for that notation.

	   nonsgml In fixed character set mode, output \% escape sequences for
	   non-SGML data characters. Non-SGML data characters can result from
	   numeric character references.

	   data-attribute Output the notation name and attributes for DATA
	   attributes. Otherwise, DATA attributes are treated like CDATA
	   attributes. For more details see clause 4.4.3 of Annex K of ISO

	   comment Output an _ command with the contents of a comment.
	   Multiple comments in a single comment declaration will result in
	   multiple distinct _ commands, just as if the comments were each in
	   a separate comment declaration.

	   omitted Output an o command before a command which was implied by
	   the input document, but omitted from the actual markup. This
	   currently affects (,), and A commands.

	   tagomit As omitted, but only for ( and ) commands.

	   attromit As omitted, but only for A commands.

	   Multiple -o options are allowed.

       -p, --only-prolog
	   Parse only the prolog.  onsgmls will exit after parsing the
	   document type declaration. Implies -s.

       -R, --restricted
	   Restrict file reading. This option is intended for use with
	   onsgmls-based Web tools (e.g. CGI scripts) to prevent reading of
	   arbitrary files on the Web server. With this option enabled,
	   onsgmls will not read any local files unless they are located in a
	   directory (or subdirectory) specified by the -D option or included
	   in the SGML_SEARCH_PATH environment variable. As a further security
	   precaution, this option limits filesnames to the characters A-Z,
	   a-z, 0-9, ´?´, ´.´, ´_´, ´-´ and does not allow filenames
	   containing "..". On systems with MS-DOS file names ´:´ and ´\´ are
	   also allowed.

       -s, --no-output
	   Suppress output. Error messages will still be printed.

       -tfile, --rast-file=file
	   Output to file the RAST result as defined by ISO/IEC 13673:1995
	   (actually this isn´t quite an IS yet; this implements the
	   Intermediate Editor´s Draft of 1994/08/29, with changes to
	   implement ISO/IEC JTC1/SC18/WG8 N1777). The normal output is not

       -v, --version
	   Print the version number.

       -wtype, --warning=type
	   Control warnings and errors. Multiple -w options are allowed. The
	   following values of type enable warnings:

	   xml Warn about constructs that are not allowed by XML.

	   mixed Warn about mixed content models that do not allow #PCDATA

	   sgmldecl Warn about various dubious constructions in the SGML

	   should Warn about various recommendations made in ISO 8879 that the
	   document does not comply with. (Recommendations are expressed with
	   "should", as distinct from requirements which are usually expressed
	   with "shall".)

	   default Warn about defaulted references.

	   duplicate Warn about duplicate entity declarations.

	   undefined Warn about undefined elements: elements used in the DTD
	   but not defined.

	   unclosed Warn about unclosed start and end-tags.

	   empty Warn about empty start and end-tags.

	   net Warn about net-enabling start-tags and null end-tags.

	   min-tag Warn about minimized start and end-tags. Equivalent to
	   combination of unclosed, empty and net warnings.

	   unused-map Warn about unused short reference maps: maps that are
	   declared with a short reference mapping declaration but never used
	   in a short reference use declaration in the DTD.

	   unused-param Warn about parameter entities that are defined but not
	   used in a DTD. Unused internal parameter entities whose text is
	   INCLUDE or IGNORE won´t get the warning.

	   notation-sysid Warn about notations for which no system identifier
	   could be generated.

	   all Warn about conditions that should usually be avoided (in the
	   opinion of the author). Equivalent to: mixed, should, default,
	   undefined, sgmldecl, unused-map, unused-param, empty and unclosed.

	   immediate-recursion Warn about immediately recursive elements. For
	   more detais see clause 2.2.5 of Annex K of ISO 8879.

	   fully-declared Warn if the document instance fails to be fully
	   declared. This has the effect of changing the SGML declaration to
	   more details see clause 2.2.1 of Annex K of ISO 8879.

	   fully-tagged Warn if the document instance fails to be
	   fully-tagged. This has the effect of changing the SGML declaration
	   NO and SHORTTAG ATTRIB OMITNAME NO. For more details see clause
	   2.2.2 of Annex K of ISO 8879.

	   amply-tagged, amply-tagged-recursive Warn if the doucment instance
	   fails to be amply-tagged. Implicitly defined elements may be
	   immediately recurisve if amply-tagged-recursive is specified. This
	   has the effect of changing the SGML declaration to specify DATATAG
	   see clause 2.2.4 of Annex K of ISO 8879.

	   type-valid Warn if the document instance fails to be type-valid.
	   This has the effect of changing the SGML declaration to specify
	   VALIDITY YES. For more details see clause 2.2.3 of Annex K of ISO

	   entity-ref Warn about references to non-predefined entities. This
	   has the effect of changing the SGML declaration to specify ENTITIES
	   REF NONE. For more details see clause 2.3.2 of Annex K of ISO 8879.

	   external-entity-ref Warn about references to external entities.
	   This includes references to an external DTD subset. This has the
	   effect of changing the SGML declaration to specify ENTITIES REF
	   INTERNAL. For more details see clause 2.3.3 of Annex K of ISO 8879.

	   integral Warn if the document instance is not integrally stored.
	   This has the effect of changing the SGML declaration to specify
	   ENTITIES INTEGRAL YES. For more details see clause 2.3.1 of Annex K
	   of ISO 8879.

	   A warning can be disabled by using its name prefixed with no-. Thus
	   -wall -wno-duplicate will enable all warnings except those about
	   duplicate entity declarations.

	   The following values for warning_type disable errors:

	   no-idref Do not give an error for an ID reference value which no
	   element has as its ID. The effect will be as if each attribute
	   declared as an ID reference value had been declared as a name.

	   no-significant Do not give an error when a character that is not a
	   significant character in the reference concrete syntax occurs in a
	   literal in the SGML declaration. This may be useful in conjunction
	   with certain buggy test suites.

	   no-valid Do not require the document to be type-valid. This has the
	   effect of changing the SGML declaration to specify VALIDITY
	   has the effect of changing the SGML declaration to specify VALIDITY
	   TYPE and IMPLYDEF ATTLIST NO ELEMENT NO. If neither -wvalid nor
	   -wno-valid are specified, then the VALIDITY and IMPLYDEF specified
	   in the SGML declaration will be used.

	   no-afdr Do not give errors when AFDR meta-DTD notation features are
	   used in the DTD. These errors are normally produced when parsing
	   the DTD, but suppressed when parsing meta-DTDs.

       -x, --references
	   Show information about relevant clauses (from ISO 8879:1986) in
	   error messages.

       The following options are also supported for backward compatibility
       with sgmls:

	   Same as -wduplicate.

	   Same as -oline.

	   Same as -c.

	   Same as -wdefault.

	   Same as -wundef.

       ospent(1), ospam(1), onsgmlnorm(1), osx(1)

       James Clark

       Ian Castle <ian.castle@openjade.org>

OpenSP				 November 2002			    ONSGMLS(1)

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