- 39 -charts are shown: one of them displays the data collected in mode 1 and theother displays the data collected in mode 2 or 3. The numerical values are shownin the right-hand side window.During on-line tests, data are fed to the computer with the resolution of 10-8 SI.5.2.4 Handling the chartsThe length of a chart can be 100 or 250 points. To toggle chart lengths, click onN or W on the top toolbar. It is possible to adjust the vertical scale in a similarway, that is by clicking on + or - on the top toolbar. The Undo option isactivated by clicking on the arrow on the top toolbar. Each axis has a numericalscale. Values on the scales must be multiplied by a constant that is a power of10. The number after the asterisk stands for the exponent.The Zoom option displays details. By pressing the left mouse button and movingthe mouse simultaneously it is possible to draw a rectangle that can be enlarged.The enlargement is done by double-clicking on the rectangle with the left mousebutton. The chart may be switched to its original size by clicking on the arrow onthe top toolbar.The whole chart can be moved with a mouse after pressing Shift on the keyboardand the left mouse button simultaneously.After pressing the right mouse button, a menu appears. Commands in the menuallow the user to hide or display various chart components.