[MlMt] expanding threads with less clicking

[Ale Muñoz]

On 28 Apr 2015, at 22:26, Joe Abley wrote:

> Is there a setting I should know about that would expand a thread 
> completely as soon as I click the top-level triangle?

This is a default behaviour on any OS X outline list: hold ⌥ (alt) 
when clicking the triangle, and the whole thread will be expanded (this 
also works in the mailbox list on the left : )


Ale