Suggestion to add a search function to the .sup edit window

[Sinthorax]

After importing a .sup file for editing (menu->import->Blu-ray (.sup) subtitle file for edit) , you can then OCR that .sup file and get a column showing the text of each frame.
Now it would be very helpful to have a search function to search for specific words or characters and display only those frames (e.g. to remove all frames with brackets)