By default, Simile displays all the elements in the model diagram: compartments, flows, variables, influence arrows, labels, etc. However, you may want to suppress the display of some of the elements to make the diagram less cluttered and less confusing, especially if you are showing a fairly complicated model to someone else for the first time.
Simile enables you to control:

The first submenu for the Show detail item in the View menu enables you to select the type of element whose display you want to change. You can then select the submodel nesting level from a further submenu.
If you select:
None |
then that type of element is not displayed at all. |
| All |
then it is displayed at all levels. |
1levels |
it is displayed only at the top (Desktop) level. |
2 levels |
it is displayed at the Desktop level and the top level of submodel (but not the submodels nested inside the top-level submodels). |
The elements are arranged in order, such that turning off the view of compartments also turns off the view of variables at the same level. Turning off the view of variables also turns off the view of influence arrows, and so forth. This is to avoid producing nonsensical or misleading views.