I am a newbie and enjoying learning Processing.

In the reference for draw() the first example code listing has an error.

Line 9 reads:

 if(yPos  0) {

should read ( I presume)

 if(yPos > 0) {





[snipped from reference]

float yPos = 0.0;

void setup() {
 size(200, 200);
 frameRate(30);
}

void draw() {
 background(204);
 yPos = yPos - 1.0;
 if(yPos  0) {
   yPos = height;
 }
 line(0, yPos, width, yPos);
}