Chisel 
logo  Computer Human Interaction & Software 
Engineering Lab

Basic Controls:

Note: Most controls are customizable. Simply go to Tools > Options > User Controls to change them. See the next page on navigation and zooming for more information.

Three-button mouse

(Most scrollwheels act as a middle mouse button)

Left Mouse Button Selects a node
Shift & Left Mouse Button Adds nodes to the selected nodes
Double Click - Left Mouse Button Opens/closes the node

Opens composite arcs (note at least one of the source/destination nodes needs to be open for a composite arc to show its children, to close expanded composite arcs, you have to close one or both of the source/destination nodes)

Middle Mouse Button Zoom/Magnify/Fisheye In
Alt & Middle Mouse Button Zoom/Magnify/Fisheye Out
Alt & Left Mouse Button Moves the selected node and its neighbours in small motions to highlight the connected graph
Right Mouse Button Opens the Context Menu


Two-button mouse

As above, but the functionality of the middle button is mapped to the keyboard. "X" will Zoom/Magnify/Fisheye in and "Z" will Zoom/Magnify/Fisheye out.