From howto.txt

A Very Basic Example

package libraryexample;

public class BoringLibrary {
PApplet parent;

public BoringLibrary(PApplet parent) {
this.parent = parent;
parent.registerDispose(this);
}

public void dispose() {
// anything in here will be called automatically when
// the parent applet shuts down. for instance, this might
// shut down a thread used by this library.
}
}


This example doesn't include the import for PApplet and therefore will not
compile.

fixed for 0100.