Editing Quickstartguide talk:Litho (section)

=== Drawing on the stone ===

There are a range of materials which can be used to draw and paint onto the stone surface, all of which contain grease, which absorbs into the top layer of the stone. Examples of which are lithographic crayons, rubbing block,(both ranging from hard to soft), and lithographic tusche, (grease suspended in water). Once processed, it is the drawn areas which will print.

When the drawing is finished, it is then dusted with french chalk – this helps to protect it during processing.