They take the form of six diagrammed lines that are interspersed with some numbers, zero through eighteen.
Instructions usually incorporate both written steps and diagrammed images, which are either photos or illustrations.
Peter Bailey has diagrammed several dragons, which are available on Origami.com.
Another Bailey design, Dragon in the Water, is also diagrammed.
Marc Kirschenbaum offers up a diagrammed set of directions that also show how to make a traditional tulip and leaf.