All the graphics editors in ultra_outliner have a common base, so called "diagram editor". It supports interaction with graphics scene which contains all the graphics objects and their connections.
In the general case a editor can be in two different state - working with elements and connecting elements. If the editor uses both modes - there is a button for switching the modes.
Drag'n'Drop an item from toolbar to the paper sheet and fill the element creating dialogue. Or drag'n'drop existing element from project manager tree.
You can select a single element, or a group.
You can move element by one or in a group.
Switch to connecting mode and drag'n'drop connection from source to destination item.
To remove a connection double click on the connection segment.
It is possible to insert many cards in one click, to do this make a right-click on the sheet and select "Insert existing cards".
Routing is performed with orthogonal principle. The mechanics is described in this paper.
Every graphics editor has the same navigation controls.
On Max OSX zooming is performed with pinch gesture on the trackpad.
In Windows zooming is performed with simply mouse wheel scrolling.
On Mac OSX scrolling is performed with two-finger scroll gesture in both horizontal and vertical directions.
In Windows scrolling is performed with panning paper with held mouse wheel.
Selecting View->Full Extend scales the paper in the way, when all the paper is inside viewport.
With double click on a paper in empty space creating of new card is initiated.