The horizontal and vertical rulers allow you to measure frame
sizes and positions on a page. With this function you can switch these
rulers on and off. The rulers are displayed at the top and left-hand
edge of the working window and give you a quick overview of the
current positions on the page. The measurement unit used can be
changed with Set units of measurement / Page size
of the Page
module. Rulers are particularly useful when moving the coordinates
reference point (see Set point of origin
below) and with the
crosshairs (see above). Of course, the ruler scaling changes with the
page magnification on the screen.
