It looks like you're using NetLogo Web in standalone mode.
If the above error is being caused by an unimplemented primitive, we recommend a quick visit to
NetLogoWeb.org
to see if the primitive has been implemented in the most up-to-date version.
find all usages of selected text (when in NetLogo Code editor)
ctrl;
comment/uncomment a line of code (when in NetLogo Code editor)
Mode d'emploi en 3 étapes :
1 - Choisissez votre simulation dans le menu déroulant
2 - Cliquez sur le bouton "Initialiser"
3 - Cliquez sur le bouton "Simuler"