The Webclient documentation shows CSS style syntax for skinparams instead of the winset syntax it expects:
<div id=main byondclass=child skinparams="left:map;right:output;splitter:50">
Should be:
<div id=main byondclass=child skinparams="left=map;right=output;splitter=50">
Had me scratching my head for a bit trying to set the map zoom until I found this post :)
