This option was rewritten during 2009 to produce a more comprehensive Simulator script that faithfully reproduces the actions of your host application based on the recordings connected to the active Viewer Studio project.

 

When selected, it will present a simple File-Save dialog for you to select the name of the script file:

 

Select the name and click on Save to generate the script...

 

For more on the Host Screen Simulator, see the help: Screen Simulator Help