sorted ascending (boolean) : Whether the viewer is sorted ascending or not
mailbox list visible (boolean) : Controls whether the list of mailboxes is visible or not
preview pane is visible (boolean) : Controls whether the preview pane of the message viewer window is visible or not
id (integer, r/o) : The unique identifier of the message viewer
window (window) : The window for the message viewer
Yvan KOENIG running Yosemite 10.10.4 (VALLAURIS, France) mercredi 8 juillet 2015 18:52:19