The Hierarchy Area

The window layouts are represented in this area as hierarchically linked nodes. The leftmost nodes are SHELL objects corresponding to different windows and having no parents. Container objects (SHELL and FORM objects) may have children (FORM and terminal objects). Children are located in the immediate right of their parent and are displayed in the same column in the hierarchy area using an icon that shows the object type.

The order children appear in this columns also reflects the order the input focus is switched between them. Generally, this order also reflects the order in which brother objects are displayed in the actual layout.
An exception applies if the parent object is a PosForm: in fact, in this case objects can be freely moved at any position in the container using the mouse.
If you need to change the focus switching sequence of a PosForm’s list of children, then you have to move them in the hierarchy area (as described below)

By clicking once the left mouse button over an object in the hierarchy area will simply select it for editing. If the generic object editing window is open, then the object’s generic attributes are set in that window.

By double clicking the left mouse button over an object in the hierarchy area will cause the object specific modal window to be open.

By pressing the right mouse button over an object cause that object to be selected and the ‘Attributes’ menu is open as a popup window.

The ‘Edit’ popup menu is open if the ‘Ctrl’ key is pressed while you press the right mouse button over an object.

Objects in the hierarchy can be moved via mouse dragging operations. You can move an object over a container object, making it the last child. If you drag holding the ‘Shift’ key down you can move an object over any other one, making it take the position in the hierarchy of the object which you release the mouse button on.