Step 1. Starting CMCLab
Type "cmclab" at a unix shell command prompt. A small menu window should pop up.

The CMCLab main menu

Step 2. Loading a CMCLab surface specification file
On the menu, choose "File | Open CMCLab File". A file panel should pop up.
Click the "Library" button in the panel.

The Open File panel (File | Open CMCLab File)

Double-click on "mrbubble" in the left window of the panel.
Double-click on "mrbubble3.cmc" in the right window of the panel.
The panel will close.

Step 3. Computing the surface
On the menu, choose "Controls | Compute Surface". The viewer window will appear showing the three-legged Mr Bubble constant mean curvature surface.

The iSight viewer window

Drag the mouse in the viewer window to move the surface.