I keep forgetting what "settings" are available with the plugin node... and maybe others do as well...
So, here's a template you can use... for 1.0.8b7
Code
<plugin name="your_plugin_name"
url="your_plugin_url.xxx"
parent=""
keep="true"
visible="true"
enabled="true"
handcursor="true"
capture="true"
children="true"
zorder="1"
alpha="1.00"
blendmode="normal"
smoothing="true"
align="center"
edge="center"
x="0" y="0"
ox="0" oy="0"
rotate="0"
width="" height=""
scale="1"
scalechildren="false"
scale9grid=""
crop=""
mask=""
onloaded=""
onover=""
onhover=""
onout=""
ondown=""
onup=""
onclick=""
crop=""
onovercrop=""
ondowncrop=""
/>I think I got all of the options 
Edited to include missed items per Klaus.
