Move node

Moves the node to other position and switches the particular node to a "fixed" state so it stays where you placed it even if other parts of the network are being moved around.

Click and drag a node.
Show more info about node

Shows info window (tooltip) with additional information about the node. Also has action menu.

Right click
Zoom in/out graph visualization

Control the zoom level of graph visualization.

Scroll mouse wheel to zoom in or out. Double click on an empty section to zoom in. Or use zoom controls in the toolbar of the chart.
Select a node

Selects a node making it available for further actions.

Click on a node
Select multiple nodes

Select multiple nodes making them available for further actions.

Use "Ctrl + Click" or "Shift + Click" on the nodes you wish to select.
Rectangular selection of nodes

Select multiple nodes using rectangle selection option.

Click and hold on an empty area. When cursor turns to crosshair, drag it for a rectangle selection.
Fit network to screen

Fits all network to the screen by adjusting the zoom level and positioning of the network visualization. Layout of the nodes stays intact.

Use "Fit to screen" option in the toolbar of the chart.
Rearrange all nodes

Rearranges all nodes dynamically for the best possible layout.

Use "Rearrange" option in the toolbar of the chart.
Lock all nodes

Fix the position of all nodes for the network visualization.

Use "Lock all nodes" option in the toolbar of the chart.