Perlin noise is a procedural texture primitive, used by visual effects artists to increase the appearance of realism in computer graphics.

In ActionScript Error Repository you can enter error code or error message in the search box and find the posible solution.

Nice Index of Design Patterns posts on O'Reilly ActionScript 3.0 Design Patterns Book companion site, useful tips by Bill Sanders and Chandima Cumaranatunge writers of the book.