Hi,
I tried to sort my nodes (and categories) in the node repository by setting the 'after'-tag in the node extension description but it seems to be ignored. I put the node-id of another node. Is that correct?
Can anybody help to troubleshoot?
Yes, this should work. Make sure you are using the ID as defined in the extension point for the other node and not it's factory class name. They can be different.
Yes, I used the ID. What about the node which should be first in a category. Do I have to leave the field blank then?
Nodes are first sorted by name alphabetically. If you specify the after relationship then this single nodes will appear sometime after the specified node. It's not possible to set a node to the front, except listing it in the "after" property of all other nodes.