Ed Marquez, MathWorks
A web view is an interactive copy of a model in HTML format that you can view with a web browser. Web views provide a way to view a Simulink® model without a license and to easily share models with others. Web views have all the information from the original model they are created from. You can see information like sample time colors, as well as the parameter attributes of blocks and signals selected.
Web views have a Model View tab and a View All tab. In the View All tab, there are static snapshots of every level of the model. You can go to any subsystem by clicking its snapshot. In the Model View tab, you can navigate web views in the same way you navigate Simulink models: You can go into subsystems by double clicking and you can navigate out by pressing the Escape key. You can also see the model hierarchy and navigate the web view from the Model Browser pane on the left.