INSERT mode in control "SAP Textedit"

Hi Folks.

I am working on a ABAP application which uses the control

"SAP Textedit".

I red the documentation (help.sap.com) but I am not able to find some help on the following:

When the control is created on the screen, the cursor is placed correctly in the control.

BUT I want to have the mode as INSERT MODE. How do I do??

We are running SAP 4.6C!

Thanks in advance.

Carsten