[TYPO3] Link to "edit record"

[Lasse Guldsborg]

Hi list

In a BE extension I have a list of specific fe_users.

<tr>
  <td>'.$row['usergroup'].'</td>
  <td>'.$row['username'].'</td>
  <td>'.$row['name'].'</td>
</tr>

I would like to make the username a link, from where you get to edit the 
fe_user record.
What is the code for such a link?

Cheers,
Lasse