I found the answer to my own question.
Basically click "Editor" on the menu bar. Then click "Add Horizontal Guide" or click "Add Vertical Guide".
Thats it, they are very good and they also show their position information. Very helpful :)
Domanda
In Xcode, does the interface builder have some sort of customisable rulers like in Photoshop to help me position elements correctly?
I know it does those red lines which appear, but I mean lines that you can position yourself.
Thanks, Dan.
Soluzione
I found the answer to my own question.
Basically click "Editor" on the menu bar. Then click "Add Horizontal Guide" or click "Add Vertical Guide".
Thats it, they are very good and they also show their position information. Very helpful :)
Altri suggerimenti
For xcode 6 it is Editor>Canvas>Add Horizontal Guide