The first task is to write a very simple CGI program which just
prints out an HTML document. This should include all the usual
<head> ... </head> and <title> ... </title>
commands. However, there are two things to note.
First of all, the first two lines of the print out are special.
The first line must be
Content-type: text/html
so that the browser knows what kind of document it is and therefore
how to display it. In this case
it is a text document of the subclass HTML. You can also send back
plain ASCII documents by using text/plain instead. Sound samples and
images also have to have the content type specified appropriately.
The second line must be blank (ie it must contain just a line feed).
This line is reserved for future development.