text: from django.conf.urls.defaults import patterns, include, url
  
  urlpatterns = patterns('',
      url(r'^$', 'pkan.pkanapp.views.index'),
      url(r'^update/', 'pkan.pkanapp.views.update'),
      url(r'^visualize/', 'pkan.pkanapp.views.visualize'),
      url(r'^delete/', 'pkan.pkanapp.views.delete'),
      url(r'^add/', 'pkan.pkanapp.views.add'),
  )
  