U sers NetLearn is very easy to use.
Graphics can also be 'clickable'.
To view the bottom of a page, click on the scroll bar, located on the right hand side of this window. To scroll down the page, simply click on the arrow pointing down located at the bottom right-hand side of the window. To scroll up the page, click on the arrow pointing up located at the top right-hand side of the window. You can trace your steps back by clicking on the back button located usually at the top left-hand side of the window. This will bring you to the previously visited page.