Datagrid behaviour property: context

Can someone please explain to me what the choices available for a datagrid under behaviour: context do (keep, shared, listen, reset and private)? There seems to be a question on this in the forum but it gives me a 404 error when I try to access it, for some reason.
1 answers

If you search the forum for "what is context" using the search box in the top-right corner, the question you are referring to appears as the top search result.

Click here to view the question if you don't want to search. :-)