Ruler

	With the icon 2D coordinate axes parallel to the screen coordinate axes will be displayed.
	The coordinate axes origin can be moved using the left mouse button. The current measure unit is displayed at the ruler and can be set in Tools > Options > Parameters and Measure on the Units tab.
	Clicking the right mouse button over the origin of the coordinate axes will activate a context menu. With the option Edit the dialog box Edit Position is displayed. You can define the following options: Components: The position of the coordinate axes origin can be specified numerically. Position: The position of the coordinate axes can be selected graphically. Click onto the field in the dialog box and select in the graphics area a point as new position.