PreviewCommands

A model's "preview commands" are the commands that are used to generate the preview that appears in the Models Library dialog, the NetLogo website (http://ccl.northwestern.edu/netlogo/models/), the Modeling Commons (http://www.modelingcommons.org/) and potentially other places. By default, they're just setup repeat 75 [ go ] but they can be customized. Some models require manually generated previews.

Preview commands are always run in a fresh headless workspace with random-seed 0 called before opening the model. The startup procedure, if present, runs before the preview commands.