diff -r 6f4d8b5e6d80 -r 11396c17cd8b progs/mandelbrot.scala
--- a/progs/mandelbrot.scala	Fri Nov 10 09:00:46 2017 +0000
+++ b/progs/mandelbrot.scala	Fri Nov 10 09:23:23 2017 +0000
@@ -9,7 +9,7 @@
 
 // complex numbers
 case class Complex(val a: Double, val b: Double) { 
-    // represents the complex number a + b*i
+    // represents the complex number a + b * i
     def +(that: Complex) = Complex(this.a + that.a, this.b + that.b)
     def -(that: Complex) = Complex(this.a - that.a, this.b - that.b)
     def *(that: Complex) = Complex(this.a * that.a - this.b * that.b,
@@ -86,9 +86,9 @@
      }
 
      pixel(x0, y0, iters(Complex(0, 0), 0))
-   }
-   viewer.updateUI()
- }
+    }
+    viewer.updateUI()
+  }
 }
 
 // Examples