My first day with Mac/Apple and Xcode5.2 (Updated: as well as 6.0.1), and I am watching a video lesson on Xcode3.2.1.
The movie shows and narrates about the following tabs in Xcode3.2.1 editor:
On the upper left:
- History tab ("
PlayFile.m:2" on the screenshot below) - Functions List tab ("
<No selected symbol>" on screenshot below)
- History tab ("
On the upper right:
- Bookmarks List tab
- Breakpoints List tab
- Class navigation tab
- List of Included Files Tab
- Counterparts tab (bouncing between
.mand.hfiles) - Lock File tab (in the upper right corner)
- Split the editor view
Tooltip on the "Split the editor view" tab in XCode3:

The result of splitting the editor window in Xcode3.2.1. upon pressing the last button (on the right, below lock tab) in XCode3:
What I see in Xcode5.1.1 is:
Updated: the same as in Xcode 6.0.1:

My questions:
- How can I split the editor window in Xcode5/Xcode6?
- Where is history, bookmarks, counterparts, etc. in
Xcode5Xcode6? - Can I get the Xcode3 "look and feel" in
Xcode5Xcode6?
The easiest way to do a split is right-click in the file you're editing and choose "open in assistant editor".
Most of the other things you're asking about are either the tabs just above where the word "Strings" appears near the top left of your window or menu items from the drop down menu just above the column where you set breakpoints (strange icon with 8 small vertical rectangles).
But, really, you'd be better off looking at instructions for the version you're going to use rather than trying to figure out and remember translations.