Use the mouse to select the tools you which and edit the simulation over the canvas.
Tools description:
?Particle?: A basic particle
?Joint?: A constraint that link particles together
?Spring?: Like the joint, but with a springy effect
?Edit?: Use this to edit Particles? positioning. Click on a Spring to open the spring box and edit the spring stiffness.
?Selection?: Use this to select a bunch of particles. Use the delete button (the keypad one, with the comma) to delete the selected particles.
Buttons:
?Options?: Use this button to show the opstions dialog. Currently, the only things inside it are the grid options (grid spacement, show grid..)
?Load/save?: Load/Save a simulation to the computer. NOTE: This is NOT cross-site. it means that you cannot load a simulation saved through another site here. This is a Flash security measure.
?Play/Edit?: Play the Simulation / Go back to edit mode
?Load this": Paste the desired simulation in the "output code? textbox and click here to load this simulation in the edit mode.
?Copy to Clipboard?: Copy the current simulation to clipboard.
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Keyboard:
C (sim mode): Show/hide the joints
Space: Toggle simulation/edit mode
CTRL (hold): Toggle delete mode, click on particles/joints/springs to delete them
SHIFT (hold): Toggle drag mode, use it to drag particles around (edit mode)