XHTML Basics

abc.htm or abc.png: A file in the current local directory
http://www.w3.org: A Uniform Resource Locator: http is the web protocol, the rest is the domain name of the computer that serves the W3C web site
http://www.w3.org/TR/1998/xyz.htm: A file on the W3C web site in the subdirectory 1998 of the directory TR
./xyz/def.htm: File def.htm in the xyz subdirectory of the current directory
../pngs/wall.png: File wall.png in the subdirectory pngs of this document's parent directory

Parent of this directory
- This Directory: abc.htm and abc.png
  - xyz: def.htm
- pngs: wall.png