How to open files in separate windows in 2014A (Mac OS X version)?

2012 & earlier allowed me to open each file in a new editor window undocked -- i.e. it is own editor window. (I vaguely recall having to set that as a default...) 2014a opens them all in the same editor, with a pane for each.

I can manually undock each file after I open it using the circled down-arrow in the upper right corner of the editor, but can't find where to set that as the default.

Also: is there a way to set 2014a to show the 2012-style menu bar, rather than the newer MS-Office-style?

Any suggestions would be appreciated. Thanks.

Note: am running under Mac OS X 10.9 (Mavericks)