Addendum: MailNews History, Full Page Zoom

Seems I missed the SeaMonkey parts of two checkins: Bug 74959 introduced back/forward buttons in MailNews and comment 130 of Bug 389628 points out that Full Page Zoom, recently introduced by the fix for Bug 4821, is also available in SeaMonkey when using the scroll wheel to change the font size (not mapped by default). The latter is more of a side-effect, though, thus the current behaviour might be changed again in the future.