These buttons allow you to manage the simulation.

• New - This allows you to select a simulation.
• Open - If you have previously saved a simulation, this allows you to open it.
• Save - You can save your simulation dimensions to a file using this button.
• Print - This will print out a list of the simulation dimensions, plus a diagram of the animation.

This is the animation display. The user can scroll around the design by left clicking and dragging. It is also possible to zoom in and out by using the scroll wheel.

These buttons control the animation.

• Step Back - Step the animation back one frame.
• Play/Stop - Play and stop the animation.
• Step Forward - Step the animation forward one frame.
• Reset Animation - Puts the animation back to its start position.
• Centre View - Places the animation in the centre of the display.

The parameters table allows the user to try different steam engine dimensions. Simply double click the dimension value, enter a different value, then press enter.

When you click on a parameter, this box shows a description of what the parameter means.