Here is a couple threads from the Ecco_Pro Forum,  
 
on getting started with LUA rules.
 
 
 
Text was  
 
clipped from the Ecco_Pro .eco file in that forum,
 
 
(using View > Notepads > Copy Notepad without items,
 
 and then using the EccoMagic (Classic) tool to copy  
 
 with formatting & folder values to the new .eco )
 
 
 
see also here for simplified forumized version of same info.