var EVII1 = new example (
  "Example VII.1",
  "This example is an introduction to working with images in the Processing language. It introduces two new datatypes \
   (<code>Pimage</code> and <code>color</code>) and shows how to access the individual pixels of the canvas. \
   (The photo of <a href=\"http://en.wikipedia.org/wiki/Lenna\">Lena S&ouml;derberg</a> is the standard image \
   used by image processing researchers since 1972.)",
  "example_7_1",
"");

var EVII2 = new example (
  "Example VII.2",
  "This example lets you select a location on the image by right-clicking the mouse. By then dragging the mouse \
   with its left-button pressed, the selected region of the image is painted over the original. It uses the \
   <CODE>copy()</CODE> function to copy sections of the image.",
  "example_7_2",
"");

var EVII3 = new example (
  "Example VII.3",
  "This example shows use of a physics library, the <a href=\"http://www.cs.princeton.edu/~traer/physics/\">traer.physics library</a>. It contains classes and routines for simulating a particle system: \
  a set of objects (particles) that are under the influence of some physics laws, mainly the attraction of \
  masses. Move the white circle with the mouse and see the black circle gravitate towards it.",
  "example_7_3",
"\
  import traer.physics.*; <br />\
  <br />\
  ParticleSystem myPhysics; <br />\
  Particle m, n; <br />\
  <br />\
  myPhysics = new ParticleSystem(0, 0.1); <br />\
  <br />\
  m = myPhysics.makeParticle(); <br />\
  m.makeFixed(); <br />\
  n = myPhysics.makeParticle(1.0, width/2, r, 0); <br />\
  myPhysics.makeAttraction(m, n, 5000, 30); <br />\
");