yes sorry its difficult to explain
I try a last time if not, it doesn't matter I stop to annoy you

in options keyboard, I changed the shortcut to open database (ctr O) to (ctr w)
it works verry well
When you are
in database now
the same shortcut (ctr w) open an occurence of the window where I am now
exemple : a database named "friends" is opened once again in a new tab
so woud it be possible that this shortcut (ctr w) open the database list ( I put an image below)
for this time (ctr O) when you are IN the database open this database list