HowTos and Guides
New Features in 2.0 Series
A "Help Layer" is designed to hold geometry construction lines:
A HelpLayer won't appear on printout;
All straight lines of a HelpLayer are infinite in length.
To set/unset the help layer flag of a layer, use the layer edit dialog (Main Menu: Layer -> Edit Layer), or the printer icon before the layer name in layer widget showing the list of layers.