C_MAP_NT__electr_4e7bae552fa7f.png' alt='C Map Nt Selector' title='C Map Nt Selector' />Extensible Markup Language XML 1. Fifth Edition1 Introduction. Extensible Markup Language, abbreviated XML, describes a class of data. XML documents and partially. XML is an. application profile or restricted form of SGML, the Standard Generalized Markup. Language ISO 8. 87. By construction, XML documents are conforming. SGML documents. XML documents are made up of storage units called entities. Parsed data is made up of characters, some of which form character. Markup encodes a description of the documents storage layout and logical. XML provides a mechanism to impose constraints on the storage layout. A software module called. MegaAsia.gif' alt='C Map Nt Selector' title='C Map Nt Selector' />C Map Nt Selector DestructedC Map Nt Selector ValveXML processor is used to read XML documents and provide access. XML processor is doing its work on behalf of another module. C Map Nt Selector' title='C Map Nt Selector' />This specification describes. XML processor in terms of how it must read XML. Origin and Goals. XML was developed by an XML Working Group originally known as the SGML. Editorial Review Board formed under the auspices of the World Wide Web Consortium. W3. C in 1. 99. 6. It was chaired by Jon Bosak of Sun Microsystems with the active. XML Special Interest Group previously known as the SGML. Working Group also organized by the W3. PB Blaster Penetrant is a powerful penetrating catalyst that can be used on rusted nuts, bolts and pipe threads Attacks and stops rust and corrosion. Official W3C site describing this language for addressing parts of an XML document which is designed to be used by both XSLT and XPointer. W3C Recommendation 16. C. The membership of the XML Working. Group is given in an appendix. Dan Connolly served as the Working Groups contact with. W3. C. The design goals for XML are XML shall be straightforwardly usable over the Internet. XML shall support a wide variety of applications. XML shall be compatible with SGML. It shall be easy to write programs which process XML documents. The number of optional features in XML is to be kept to the absolute. XML documents should be human legible and reasonably clear. The XML design should be prepared quickly. The design of XML shall be formal and concise. XML documents shall be easy to create. Terseness in XML markup is of minimal importance. This specification, together with associated standards Unicode Unicode. ISOIEC 1. 06. 46 ISOIEC 1. Internet BCP 4. 7IETF BCP 4. Language Subtag Registry IANA LANGCODES for language. XML Version 1. 0 and. This version of the XML specification may be distributed freely, as long as. Terminology. The terminology used to describe XML documents is defined in the body of. The key words MUST, MUST NOT. REQUIRED, SHALL, SHALL NOT. SHOULD, SHOULD NOT, RECOMMENDED. MAY, and OPTIONAL, when EMPHASIZED. IETF RFC 2. 11. 9. In addition, the terms defined. XML processor error. A violation of the rules of this specification. Unless otherwise specified, failure to observe a prescription of this specification indicated by one of the keywords MUST, REQUIRED, MUST NOT, SHALL and SHALL NOT is an error. Conforming software MAY detect and report an error. MAY recover from it. An error which a conforming XML processor. MUST detect and report to the application. After encountering a fatal error, the processor MAY continue processing the. MAY report such errors to the application. In order to support correction of errors, the processor MAY make unprocessed. Once a fatal error is detected, however, the processor. MUST NOT continue normal processing i. MUST NOT continue to pass character. Conforming software. MAY or MUST depending on the modal verb in the sentence behave as described. MUST provide users a means to enable or disable the behavior. A rule which applies to. XML documents. Violations of validity. MUST, at user option, be reported by validating XML processors. A rule which applies. XML documents. Violations. Of strings or names Two strings. Characters with multiple possible. ISOIEC 1. 06. 46 e. Of strings and rules in the grammar A string. Of content and content models An element matches its declaration. VC Element Valid. Marks. a sentence describing a feature of XML included solely to ensure. XML remains compatible with SGML. Marks. a sentence describing a non binding recommendation included to increase. XML documents can be processed by the existing installed. SGML processors which predate the Web. SGML Adaptations Annex to ISO 8. Documents. A data object is an XML. In addition, the XML document is. Each XML document has both a logical and a physical structure. Physically. the document is composed of units called entities. A document begins in a root. Logically, the document. The logical and physical structures MUST nest properly, as described. Well Formed Parsed Entities. Well Formed XML Documents. A textual object is a well formed. XML document if. Taken as a whole, it matches the production labeled document. It meets all the well formedness constraints given in this specification. Each of the parsed entities. Document. Matching the document production implies that It contains one or more elements. There is exactly one element. For. all other elements, if the start tag is in. Measurement Studio License. More simply stated, the elements. As a consequence of this. C in the document, there is one other element P. C is in the content of P, but. P. P. is referred to as the parent of C, and C as. Characters. A parsed entity contains text. A character. is an atomic unit of text as specified by ISOIEC 1. ISOIEC 1. 06. 46. Legal characters are tab, carriage. Unicode and ISOIEC 1. The. versions of these standards cited in A. Normative References were. New characters may be added. Consequently, XML processors. MUST accept any character in the range specified for Char. Character Range2   Char       x. A x. D x. 20 x. D7. FF x. E0. FFFD x. FFFF any Unicode character, excluding the surrogate blocks, FFFE, and FFFF. The mechanism for encoding character code points into bit patterns may. All XML processors MUST accept the UTF 8 and UTF 1. Unicode Unicode. Character Encoding in Entities. Note Document authors are encouraged to avoid. Programas Para Descargar Musica Sin Virus Songr. Unicode. The characters defined in the following ranges are also. They are either control characters or permanently undefined Unicode. F x. 84, x. 86 x. F, x. FDD0 x. FDEF. FFFE x. FFFF, x. 2FFFE x. Hospital Lab Software. FFFF, x. 3FFFE x. FFFF. x. 4FFFE x. FFFF, x. 5FFFE x. FFFF, x. 6FFFE x. FFFF. x. 7FFFE x. FFFF, x. 8FFFE x. FFFF, x. 9FFFE x. FFFF. x. AFFFE x. AFFFF, x. BFFFE x. BFFFF, x. CFFFE x. CFFFF. x. DFFFE x. DFFFF, x. EFFFE x. EFFFF, x. FFFFE x. FFFFF. x. 10. FFFE x. FFFF. 2. 3 Common Syntactic Constructs. This section defines some symbols used widely in the grammar. S white space consists of one or more space x. White Space3   S       x. D x. ANote The presence of x. D in the above production is. First Edition. As explained in 2. End of Line Handling. D characters literally present in an XML document. A characters before. The only way to get a x. D character to match this production is to. An Nmtoken name token is any mixture of name. A Name is an Nmtoken with a restricted set of initial characters. Disallowed initial characters for Names include digits, diacritics, the full stop and the hyphen. Names beginning with the string xml. Xx Mm Ll. Note The. Namespaces in XML Recommendation XML Names assigns a meaning. Therefore, authors should not use the. XML names except for namespace purposes, but XML processors must. The first character of a Name. MUST be a Name. Start. Char, and any. other characters MUST be Name. Chars this mechanism is used to. European ASCII digits or with. Almost all characters are permitted in. The intention is to be inclusive rather than exclusive. Unicode can be used in. XML names. See J Suggestions for XML Names for suggestions on the creation of.