JetChart supports zooming of a selected chart area. To select area to be zoomed, move mouse cursor
to the position that will delimit the left or right side of the area to be selected, click mouse left
or right button and drag. After finishing selection, release mouse button and the selected area is expanded.
To zoom-out chart completely after a zoom-in operation, click mouse right button.
A scrolling bar is displayed at the top of the chart area. If chart is zoomed-in, the scrolling bar can be
used to scroll chart and display data points placed out of the selected area.