@Tim Edwards In magic "e" is used to make selected cell as new edit cell. What is the command to come out of this selected edit cell back to top cell ?

If you want to descend/ascend the hierarchy, use the

>

and

<

keys instead of

e

.

e

just edits the selected cell, so there's no way to "get back" without typing the entire command

edit <top_level_cell>

.

>

and

<

maintain a stack of cells which you have previously been editing.

Does these arrow keys need to pressed with shift i.e

shift + >

or

shift + <

Somehow they seem not work for me. Any indication on magic window about hierarchy change or which hierarchy am i working in.

Use the cell manager.