A group is a subtree with a name assigned to its root node.
The 'GROUP MODE' allows you to expand or collapse groups and to create, rename or destroy groups.
Click on the <GROUP> button of the 'ARB_NT' window or the 'F3' key on the keyboard to activate the 'GROUP MODE'. In the latter case, the cursor has to be placed within the tree display area.
To collapse a group, either click on the diamond shown at the root of the group, on the group bracket or its name.
To expand a group, click on the group triangle or its name.
Create a group:
Click on the root branch of the subtree which shall be grouped. Enter a group name when asked for.
Destroy / rename / keel-over groups:
Select group as described for 'collapse/expand' above, but use the right mouse button. Select the wanted action:
KeelOver: inverts the orientation of ´Keeled groups´
Rename: ask for new name and rename group
Destroy: destroys the groups