[truth1ness]

The close/quit behavior for calibre is very non-standard for Mac applications.

For mac it usually works like this:
Cmd-Q = quit
Cmd-W = close window but don't quit
Click on red corner button = Cmd-W close window but don't quit

But calibre kind of has it messed up
Cmd-Q = quit
Cmd-W = nothing
Click on red corner button = Cmd-Q quit

Most of the time I don't want to quit, I just want to close the window but leave it running but not visible so the book server can stay up. It'd be nice if it followed the usual mac conventions.