Cau, I am modifying a lot of issues at once, as I think I have something to  
say in general.  
  
In NetBeans API documentation we have few places where we list "layer APIs".  
The most central one is   
http://www.netbeans.org/download/dev/javadoc/layers.html  
This is supposed to help module writers to find information about possible  
folders where it is possible to make their registrations.  
  
I believe that the ability to register actions into menu items of loaders is  
important and shall be documented. That is why please modify your arch*.xml  
documents together with the change in your layers. This is example I put into  
openide/loaders:  
  
<api name="Loaders-folder-any-Actions" category="stable" group="layer"  
type="export" >  
    The actions that the default folder loader shows in its popup menu are  
read from  
    a layer folder <code>Loaders/folder/any/Actions</code>  
    so if any module wishes  
    to extend, hide or reorder some of them it can just register its actions  
there.  
</api>   
  
Possible problem is that you have to modify an arch*.xml of a module which 
provides a javadoc, otherwise it will not be listed in the docs page. If you 
have such module, please modify its arch*.xml, otherwise modify your own 
arch*.xml, in future we can process it, even if it does not have javadoc at 
all. 
 
Thanks for helping to improve our developers documentation. 
  

Checking in autoupdate/arch/arch-autoupdate.xml;
/cvs/autoupdate/arch/arch-autoupdate.xml,v  <--  arch-autoupdate.xml
new revision: 1.30; previous revision: 1.29
done
Checking in autoupdate/src/org/netbeans/modules/autoupdate/NbmDataLoader.java;
/cvs/autoupdate/src/org/netbeans/modules/autoupdate/NbmDataLoader.java,v  <-- 
NbmDataLoader.java
new revision: 1.9; previous revision: 1.8
done
Checking in autoupdate/src/org/netbeans/modules/autoupdate/resources/mf-layer.xml;
/cvs/autoupdate/src/org/netbeans/modules/autoupdate/resources/mf-layer.xml,v 
<--  mf-layer.xml
new revision: 1.32; previous revision: 1.31
done

verified