Relative path names are addresses of files relative to your current location. They are useful for creating links within a directory and its subdirectories. You could then easily move the entire chunk of information to another location without having to rename any links.
As a quick example, if you are working in the directory /dept/mydept/Magazine which has subdirectories june95 and may95, you could use relative paths to move between the two subdirectories. For example, if you are editing a file in the directory
/dept/mydept/Magazine/june95/and you want to refer to a file in the may95 subdirectory, you could create the following link:
Please look at the <a href="../may95/file2.html">May</a> issue.If you used the full path name, /dept/mydept/Magazine/... and then all this information was moved to the directory /dept/newdept/Magazine/, you would have to rename all the links.
To make a link to a page outside your own material, you should include the entire HTTP:// address in the link . For example:
And <a href="http://www.rpi.edu">RPI</a> has a Student Union.
Please refer to page 
for more information on organizing your files and using relative links.