Acronyms, and other IT terms related to class.

1. The Extensible Markup Language (XML) is a general-purpose markup language.[1] It is classified as an extensible language because it allows its users to define their own elements. Its primary purpose is to facilitate the sharing of structured data across different information systems, particularly via the Internet,[2] and it is used both to encode documents and to serialize data. In the latter context, it is comparable with other text-based serialization languages such as JSON and YAML.[3]

2. SGML - The Standard Generalized Markup Language (SGML) is a metalanguage in which one can define markup languages for documents. SGML is a descendant of IBM's Generalized Markup Language (GML), developed in the 1960s by Charles Goldfarb, Edward Mosher and Raymond Lorie (whose surname initials were used by Goldfarb to make up the term GML[1]).

3. GML - Generalized Markup Language (GML) is a set of macros that implement intent-based markup tags for the IBM text formatter, "SCRIPT". SCRIPT is the main component of IBM's Document Composition Facility (DCF). A starter set of tags in GML is provided with the DCF product.
GML simplifies the description of a document in terms of its format, organization structure, content parts and their relationship, and other properties. GML markup (or tags) describes such parts as chapters, important sections, and less important sections (by specifying heading levels), paragraphs, lists, tables, and so forth.

4. CDF -Channel Definition Format (CDF) is an XML standard used in conjunction with Microsoft Active Channel and Smart Offline Favorites technologies. Its use is to define a website's content and structure. The standard is somewhat similar to the RSS standard introduced by Netscape several years after CDF was introduced in 1997. The standard and Active Channel were introduced with the launch of Internet Explorer 4.0, while Smart Offline Favorites was introduced with the launch of Internet Explorer 5.0.

5. CML- CML (Chemical Markup Language) is a new approach to managing molecular information using tools such as XML and Java. It was the first domain specific implementation based strictly on XML, the most robust and widely used system for precise information management in many areas. It has been developed over more than a decade by Murray-Rust, Rzepa and others and has been tested in many areas and on a variety of machines.

6. OFX -Open Financial Exchange (OFX) arising from Microsoft's OFC and Intuit's Open Exchange is a data-stream format for exchanging financial information.

7. MathML -Mathematical Markup Language (MathML) is an application of XML for describing mathematical notations and capturing both its structure and content. It aims at integrating mathematical formulae into World Wide Web documents. It is a recommendation of the W3C math working group.