Splitting the screen vertically
To split the screen vertically:
Move the mouse pointer into the horizontal scroll bar at the bottom of the screen and place it over the small button on the right with the black triangle.
Immediately to the right of
this button you will see a thick black line (Figure 18). Move
the mouse pointer over this line and it will turn into a line
with two arrows.
Hold down the left mouse
button and a grey line will appear, running up the page. Drag
the mouse to the left and this line will follow.
Release the mouse button
and the screen will be split into two views, each with its
own horizontal scroll bar.
Splitting the screen horizontally and vertically at the same time will give four views, each with its own vertical and horizontal scroll bars.