The enjoy controls are old, but still much in use.
If you need to re-use and idea and code, you can use transaction DWDM: the Enjoy Demo Center.
Double clicking program name will show the ABAP code on the right.
Double clicking on the title will give you the output of the example code.
The HTML control as WWW browser can be used to test the internet connectivity from your SAP server to internet.
Some developers might have restrictions on their laptop and use this program to browse....