Hilfslinien

If the rulers are not visible, ceck Show - Ruler Guide in the View menu.

Place a guide:

1. Drag from the horizontal ruler to create a horizontal guide.
2. Drag from the vertical ruler to create a vertical guide.

or choose Manage - Ruler Guide in View menu.

-> the ruler guide dialog box appears:

Read more about customizing the Rulers.

Create ruler guide for artwork

1. Change a ruler’s zero origin