If you mark several expressions, you can modify their properties together or save the selection as a new file.

If you click on an entry, its row will be marked. Keeping the Ctrl key pressed while clicking on another entry, will add its row to your selection. By pressing the Shift key and clicking on a row further away from your selection will add all rows in between to your selection.

The edit dialog has a different appearance for selections. Some properties are disabled as it doesn't make sense to edit the expressions themselves or remarks of a whole range simultaneously.

All fields which may be modified are empty at the beginning to represent their unmodified state. Modifications of properties will only be saved if you confirm them by clicking on the Apply button.