[OS X TeX] TexShop 2.18

[Sylvain CHAMBON]

hey !

some questions about TexShop 2.18

* is it possible to have the numbers of the lines in the window ?

* when you split a windows, is it possible to open an other document  
in the second part of the windows ?

* when you have several opened windows, is there a way with the  
keyboard to navigate among the windows ?

thank you for yours answers and please excuse my english ;-)

sylvain.