I go down one level in the cell and I can't go back.

@Mihai Hurdugaciu looks like you are at the lowesr level

@Mihai Hurdugaciu: If you use the

>

key to descend, you can use the

<

to ascend back to the top. But you can always get back to the top with the

load <cellname>

command from the console prompt.