ticket states

[hermelin]

Hi guys,
the ticket states seem to be a bit confusing to me.
As I see, when ticket comes from customer it comes as 'new'. When it's created by the agent it is 'open'. So far it makes sense.
However if I start working on any new ticket (assign it to agent, add a note..) I would expect it to come to the 'open' state. This doesn't happen and new tickets remain new until I close them, without ever entering the 'open' state.
This makes things really a bit confusing. I am sure all these actions and states related to them can be changed in the SysConfig, but so far I haven't found where.
Why is OTRS being set this way by default? I am sure I am not the first person who finds this odd.
Thanks

[hermelin]

To specify the question: where in the SysConfig can I set default ticket state after ownership update?
Thank's a lot again

[crythias]

By default, tickets are considered "new" until an agent replies to the ticket, though there is a ticket change state on lock.