You can use the left mouse button to zoom a section of a graph. While holding the left mouse button, drag the pointer to the left or right. When you release the mouse button the tool automatically zooms into this area of the chart. You can use the slider bar at the bottom of the chart to advance forward or backward in time on the chart. This feature is fully-interactive and the tool continues to collect and log data while you are zoomed into the results. Right-click, and then select Zoom Back Out to return to normal viewing.