Ethernet programming

Using Arduino Programming Questions
1

Referring to this projects,

client.println("HTTP/1.1 200 OK"); //send new page
client.println("Content-Type: text/html");
client.println();

client.println("");
client.println("");
client.println("");
client.println("");
client.println("");
client.println("Home Automation");
client.println("");
client.println("");
client.println("

Home Automation

");
client.println("
");
client.println("
");

client.println("<a href="/?lighton"">Turn On Light");
client.println("<a href="/?lightoff"">Turn Off Light
");

client.println("");
client.println("");
client.println("
");
client.println("

");

client.println("
");
client.println("HELLO WORD");

I am curious, where can I learn that programming to create a GUI online ? For example :
client.println("
");
client.println("

");

Thanks

2

Are you referring to the

? If so you need to search google for html tutorials.
3

Oh, its html.

Okay thanks !