@shreedhar does answer your question excellent.
Maybe I’m more clumsy. I push the OK-button after a filter. Then I view the result in GIMP, because the end result is sometimes different from the preview. In this case I continue with the last result and restart G’MIC for the next filter.
@afre made a nice filter yesterday/today 
:
GIMP>G’MIC>Testing>Afre>Clean Text
Maybe you can try that filter also:
