In cc_ref_2.pdf
This command does not require a product license; also, it does not apply to snapshot
views.
The setview command creates a process that is set to the specified dynamic view. The
new process is said to have a set view context. If you specify an inactive dynamic
view—one whose view tag does not appear in the local host’s viewroot directory,
view—a startview command is invoked implicitly to activate that view.
After you set the dynamic view, you can take advantage of transparency: the ability
to use standard pathnames to access version-controlled objects. The associated
view_server process resolves a standard pathname to an element into a reference
to one of the element’s versions. For more information, see the pathnames_ccase
reference page.