With each DHTML application, Laszlo needs to also send its LFC (Laszlo Foundation Class) library. This needs to be done, because Laszlo supplies its own animation and layout engine, component library and many other things. This supports the animation and components seen in applications like LzPix (available at: http://www.openlaszlo.org/demos).
The latest Laszlo releases have separated out this LFC library for DHTML. So now a Laszlo DHTML application checks for the LFC library in the browser cache, this allows smaller subsequent Laszlo DHTML downloads