Workspace
The Visualization Workspace is shown when the Visualization Screen is opened. The workspace contains elements from database which are visualized as a graph. You can interactively manipulate the elements (for example move them). Example of a workspace:

Common operations in the workspace are:
Select element
Click on an element to select it.
Select more elements
Hold "SHIFT" and click on several elements.
Hold "SHIFT" and select (click+drag) a Workspace area containing one or more elements.
Press "CTRL(⌘)" + "A" to select all elements in the workspace.
Move element
Hold the left mouse button on a selected element and move the mouse to move the element.
Explore node
If a node has some neighbors currently not shown in the visualization, a node is not entirely explored. This node is marked by a "+" symbol. Doubleclick explores this node and all neighbors are shown.
Move view
Click and hold the left mouse button on the workspace (away from any shown elements) and move the mouse to pan the whole view.
Zoom view
Use the mouse wheel to zoom in and zoom out. The zoom center is the current position of the mouse cursor.
Other keyboard shortcuts
DEL : Hide selected nodes and relationships
CTRL(⌘) + DEL : Hide not selected nodes and relationships
CTRL(⌘) + SHIFT + DEL : Hide orphaned nodes (nodes with no relationships)
CTRL(⌘) + A : select all elements in the visualization
CTRL(⌘) + F : open search tab in visualization and set focus on the search field so you can start typing the search string right away
CTRL(⌘) + Q : open the top search panel
CTRL(⌘) + S : save visualization
CTRL(⌘) + Z : undo the last operation (adding or removing of graph elements)
CTRL(⌘) + Y : redo the last undone operation (adding or removing of graph elements)
CTRL(⌘) + E : expand selected nodes
CTRL(⌘) + R : find all relationships between selected and unselected parts of the graph
CTRL(⌘) + SHIFT + R : find mutually related nodes for the selected part of the graph
CTRL(⌘) + W : find the shortest path between selected nodes
CTRL(⌘) + B : select neighbors of selected nodes
CTRL(⌘) + < : select incoming nodes of selected nodes
CTRL(⌘) + > : Select outgoing of selected nodes
CTRL(⌘) + I : invert selection
ESC : Unselect all nodes and relationships
CTRL(⌘) + L : layout the selected part of the graph using the force-directed layout
CTRL(⌘) + M : create a new node
CTRL(⌘) + SHIFT + M : toggle adding of new relationships
CTRL(⌘) + X : delete selected nodes and relationships
CTRL(⌘) + UP_ARROW : horizontal ALIGNMENT of selected nodes
CTRL(⌘) + LEFT_ARROW : vertical ALIGNMENT of selected nodes
CTRL(⌘) + RIGHT_ARROW : equal horizontal SPACING between selected nodes
CTRL(⌘) + DOWN_ARROW : equal vertical SPACING between selected nodes
CTRL(⌘) + MOUSE WHEEL or SHIFT+ MOUSE WHEEL : stretch out or compress the selected part of the graph (expand or reduce spacing between nodes)
ARROWS : move selected part of the graph in the desired direction
Hold the right mouse button and move the mouse - rotate the selected part of the graph (or the whole graph if nothing is selected)