RADPANELITEM - "Priority" attribute missing ?

[IQworks]

Dont know if this is the right place to post this, but,

I am trying the

\VS Projects\navigation\ServerLocatingItems
I cannot find the "Priority" attribute , or where it is defined. I keep getting "priority is not a valid attribute for element RadPanelItem".
Have looked throughout the net, even at your
http://www.telerik.com/help/aspnet/panelbar/radpanelbar-telerik.webcontrols.radpanelitem_members.html
cannot see the "priority" attribute anywhere ?
Here it is in the code:

 

<telerik:RadPanelItem Text="Quick Check In" Value="11"

Priority="Low">

thanks for your time.

[IQworks]

Sorry, issue resolved, thanks. I didnt know you could make up your own attribute names.
thanks for the lesson.