If you work in Cache-Terminal, go to:
Select: C-Cache-Terminal, click on Edit
Go to bottom line (Caption: ZUFormFeed) and change the value from $C(27,91,72,27,91,74) to your needs.
For example, if you want to retain the first and the second lines, to: $C(27,91,51,59,48,72,27,91,74).
In case, your device type is not the Cache-Terminal, search for your device in
Select your device, for example TERM, |TNT| or whatever device type you have.
Click on edit and notice the Sub-Type.
Now, as above, go to the sub-types, and change the ZUFormFeed field.
In case, you wont find your device and/or device sub-type, there is a direct way too,
to set the desired FormFeed (i.e. write #) and the Backspace behavior:
The first sequence, as the method name implies, is the FormFeed sequence and
the second is the Backspace sequence