HTML

HTML (HyperText Markup Language) is the lingua franca of the Web.

Document Types

An HTML file has a document type that specifies which version of the HTML language specification the file conforms to. The file declares its document type using a <!DOCTYPE … > declaration that appears at the top of the file.

TypeMetal can create and edit documents in all of the recent HTML document types:

• HTML 5
• XHTML 1.1
• XHTML 1.0 (Strict and Transitional)
• HTML 4.01 (Strict and Transitional)

TypeMetal recognizes these standard filename extensions for HTML and XHTML files:

• .html
• .htm
• .shtml
• .shtm

Additionally, TypeMetal recognizes XHTML files that have any of the following filename extensions:

• .xhtml
• .xhtm
• .xht
• .xml

Note that “.xml” is a very broad, general file type specification: Not all .xml files contain XHTML.

TypeMetal can open and edit “.xml” files whose content is a properly structured (or fixable) XHTML document, but it is not suitable for editing other types of XML files.