The configure button allows one to reset several parameters in the simulation. Remember: If the number is still red, you need to hit Enter for the program to know the new number! If the parameters change while the Configure window is open, the window will not reflect the new numbers unless you hit the ``Revert'' button in the top middle. This mostly happens when one loads presets.

**L**is the size of the grey-scale viewing area, in meters.**Wave tank resolution:**How many dots on a side are displayed for the XY amplitude wave tank plot. Default 100x100. Max 200x200, unless you resize the window.**Wave Amplitude/Area**is the intensity of the impinging wave. One uses this variable, for example, to vary the double-slit and single-slit intensities so they can be compared nicely.**Wave Amplitude/Slit**is the intensity of the impinging wave for the case**a=0**(infinitely narrow slits count too.)**Data points on Screen:**How many points are displayed on the graph. Default 200; must be less than 1000.**Integration points**huygens approximates the wide slits as a set of several thin slits, with carefully chosen separations and weights. Wide slits will look like several point sources if this variable is too small. The number of Gauss-Legendre quadrature points is this variable times a/lambda, rounded to the nearest integer.**Color saturation amp**This defines what amplitude is given the darkest and lightest value for the grey-scale plot. If everything looks grey, make this smaller: for less contrast, make it larger.**color0, color1, ...**The colors, in RGB, for the different amplitudes, for the ``grey-scale'' plots. Defaults to grey-scale.

Statistical Mechanics: Entropy, Order Parameters, and Complexity, now available at Oxford University Press (USA, Europe).