diff --git a/scribblings/manual.scrbl b/scribblings/manual.scrbl
index e9bcd5e..1c2286c 100644
--- a/scribblings/manual.scrbl
+++ b/scribblings/manual.scrbl
@@ -626,6 +626,10 @@ Here are a collection of web-world demos:
 @itemize[
 @item{@link["http://hashcollision.org/whalesong/examples/attr-animation/attr-animation.html"]{attr-animation.html} [@link["http://hashcollision.org/whalesong/examples/attr-animation/attr-animation.rkt"]{src}]  Uses @racket[update-view-attr] and @racket[on-tick] to perform a simple color animation.}
 
+
+@item{@link["http://hashcollision.org/whalesong/examples/boid/boid.html"]{boid.html} [@link["http://hashcollision.org/whalesong/examples/boid/boid.rkt"]{src}]  Uses @racket[update-view-css] and @racket[on-tick] to perform an animation of a flock of @link["http://en.wikipedia.org/wiki/Boids"]{boids}.}
+
+
 @item{@link["http://hashcollision.org/whalesong/examples/dwarves/dwarves.html"]{dwarves.html}
 [@link["http://hashcollision.org/whalesong/examples/dwarves/dwarves.rkt"]{src}]
 Uses @racket[view-show] and @racket[view-hide] to manipulate a view.  Click on a dwarf to make them hide.
@@ -871,6 +875,14 @@ Get the attribute @racket[name] at the focus.
 Update the attribute @racket[n] with the value @racket[v] at the focus.
 }
 
+@defproc[(view-css [v view] [name String]) view]{
+Get the css value @racket[name] at the focus.
+}
+
+@defproc[(update-view-css [v view] [name String] [value String]) view]{
+Update the css value @racket[n] with the value @racket[v] at the focus.
+}
+
 @defproc[(view-id [v view]) world]{
 Get the unique identifier of the node at the focus.
 }