Inserting Nulls in EM

Hi,

I've forgotten how to put a null value in a column of a table where a previous value existed before.

What I mean is if through EM, you look at the data (Open Table -> Return all Rows) and you see a value in a column that is nullable (for example, I want to change a column that has a 'ABC Company' to a NULL value).

How do you that - i've done it in the past ,but cannot remember

Thanks in advance

click on the CELL and press CTRL '0'
'0' is Zero

thank you mak