Fix in drawing example.
Fix in drawing example.

pbfy0/visvis,pbfy0/visvis,pbfy0/visvis,chrisidefix/visvis,chrisidefix/visvis,Alwnikrotikz/visvis,chrisidefix/visvis,AlanZatarain/visvis.dev,Alwnikrotikz/visvis.dev,Alwnikrotikz/visvis,pbfy0/visvis.dev,Alwnikrotikz/visvis,almarklein/visvis.dev,chiluf/visvis.dev