A selected subset of actions are presented as controls in the toolbar. The different sections in the toolbar can be dragged and positioned anywhere as small floating toolbars. Management of the toolbar is done by right-clicking on the toolbar and then manipulating the displayed menu.
In the main area of the application, several 3D views can be open at the same time. One of them will be active and the active view can be either maximized to use the whole main area, or normalized so that you can see all the open 3D views.
Most of the settings and features of ResInsight is accessible through the **Project Tree** and the **Property Editor**. Selecting an item in the **Project Tree** activates the corresponding 3D View, and shows the item properties in the **Property Editor** available for editing.
Toggling a checkbox next to an item in the **Project Tree** will toggle visibility in the 3D view. Toggling a checkbox for a collection of items will affect the visibility for all items in the collection. 
A *Case* in ResInsight means a Grid model with a particular set of results or property data. There are three different types of Eclipse cases and one type of Geomechanical cases.
This is a Case based on the results of an Eclipse simulation, read from a grid file together with static and restart data. Multiple Cases can be selected and read from a folder.
This Case type is based on a `*.GRDECL` file, or a part of an Eclipse *Input* file. This Case type supports loading single ASCII files defining Eclipse Cell Properties, and also to export modified property sets to ASCII files.
Each of the Eclipse properties is listed as separate entities in the **Project Tree**, and can be renamed and exported.
There are only one type of geomechanical cases, namely the ABAQUS-odb case type.
The geomechanical cases will is sorted into its own folder in the project tree named **Geomechanical Models**  as opposed to the **Grid Models** folder where the Eclipse cases and **Grid Case Groups** resides.
A **Grid Case Group** is a group of Eclipse **Result Cases** with identical grids, but generally different active cells, initial values and results. These cases are called *Source Cases*.
ResInsight stores which cases you have imported and all the settings for each view etc. in a project file with the extension `.rsp`.
This file only contains references to the real data files, and even references to data files generated by ResInsight itself.
Statistics calculations, property sets you generate by using Octave, and well paths are saved to a folder in the same directory as you save the project file, and is named ProjectFileName_cache. So if you need to move your project, make sure you move this folder as well.
Image export of current 3D view can be launched from **File -> Export -> Snapshot To File**. A snapshot can also be copied to clipboard using **Edit->Copy Snapshot To Clipboard**.
