Using this command changes a number of parameters that are accessible from the Modify Parameters menu.  This will cause succeeding images to be rendered from a different point of view than the default view with which the program starts.  When selected, there will be a checkmark next to the item in the menu.  However, due to the interaction with the Modify Parameters menu, this can sometimes be misleading.

Selecting this item when the command is already checked on the menu will return the viewing parameters to the default values.