@@ -1,6 +1,7 @@
 
 // Based on code 32-07 (p. 297)
 
+import processing.pdf.*;
 
 float inc = 0.0;
 
@@ -12,11 +13,11 @@ void setup() {
 }
 
 void draw() {
-  
+
   if(record) {
     beginRecord(PDF, "page_290.pdf");
   }
-  
+
   stroke(0, 143);
   randomSeed(0);
   background(255);
@@ -33,12 +34,12 @@ void draw() {
     tail(i, 300, int(random(5, 12)), angle*random(1.0, 1.3));
     tail(i, 400, int(random(5, 12)), -angle*random(1.0, 1.3));
   }
-  
+
   if(record) {
     endRecord();
-    record = false; 
+    record = false;
   }
-  
+
 }
 
 void mousePressed() {
 
@@ -1,6 +1,7 @@
 
 // Based on code 33-14 (p. 307)
 
+import processing.pdf.*;
 
 float inc = 0.0;
 
@@ -17,7 +18,7 @@ void setup() {
   size(180, 666);
   smooth();
   noFill();
-  strokeWeight(0.25);  
+  strokeWeight(0.25);
   y = new float[height];
   x = new float[height];
 
@@ -32,9 +33,9 @@ void draw() {
   background(255);
 
   // Shift the values to the right
-  for (int i = y.length-1; i > 0; i--) { 
+  for (int i = y.length-1; i > 0; i--) {
     y[i] = y[i-1];
-  } 
+  }
   // Add new values to the beginning
   my += (mouseX-my) * 0.1;
   y[0] = my;
@@ -46,9 +47,9 @@ void draw() {
   endShape();
 
   // Shift the values to the right
-  for (int i = x.length-1; i > 0; i--) { 
+  for (int i = x.length-1; i > 0; i--) {
     x[i] = x[i-1];
-  } 
+  }
   // Add new values to the beginning
   mx += (mouseY-mx) * 0.1;
   x[0] = mx;
@@ -62,7 +63,7 @@ void draw() {
 
   if(record) {
     endRecord();
-    record = false; 
+    record = false;
   }
 
 }
 
@@ -1,27 +1,28 @@
 
 // Based on code 45-04 (p. 424)
 
+import processing.pdf.*;
 
 void setup() {
-  size(513, 666); 
+  size(513, 666);
 }
 
 void draw() {
   if (mousePressed == true) {
     point(mouseX, mouseY);
     println("hi");
   }
-} 
+}
 
 void mousePressed() {
-  beginRecord(PDF, "page_420.pdf"); 
+  beginRecord(PDF, "page_420.pdf");
   background(255);
   stroke(0);
   strokeCap(ROUND);
 }
 
 void mouseReleased() {
-  endRecord(); 
+  endRecord();
 }