Hi Mike,
To disable embedding of display functions by default:
- Open the File Explorer window.
- Double click the XISF icon on the left side.
- On the XISF Format Preferences dialog, click the Display function check box (Override Embedding Settings section) until it becomes an empty square. Note that these check boxes are tristate: they can be enabled (check mark), disabled (empty), and in "no change" state (concentric square).
- Click the OK button.