Extensible Markup Language (XML) FAQ (jGuru) - XML is a standard for representing data in a vendor neutral format. It separates the content of the data from the presentation of it. This FAQ collection from Java Guru (jGuru) is searchable and layed out for easy browsing also.
Frequently-Asked Questions about the Extensible Markup Language - A list of Frequently-Asked Questions about the Extensible Markup Language (XML). This FAQ has answers to common questions people ask about XML. It has a few pointers for related areas such as HTML, SGML, CGI scripts, PHP, JSP, Java, and databases.
What is XML? (Rees) - This collection of resources was compiled by L.C. Rees. It includes resources for learning the eXtensible Markup Language, code, tools and selected links of continuing relevance.
XML FAQ from Textuality - A scrolling document answering What is XML?, Is XML SGML?, Is XML HTML?, How, exactly, do XML and SGML differ?, What does "well-formed" mean?, What does "valid" mean?, What does XML mean to SGML product vendors?, and Why are empty elements different in XML?
XML Glossary from ZVON - A searchable glossary covering XML terminology, W3C specifications and other XML acronyms and languages.