Ayuda de LibreOffice 24.8
You can quickly exit manual formatting by pressing CommandCtrl+Shift+X. For example, if you have pressed CommandCtrl+B to apply the bold typeface to the text that you type, press CommandCtrl+Shift+X to return to the default character format of the paragraph.
Para restablecer todo el formato directo de un texto, seleccione ese texto y, a continuación, elija Formato ▸ Limpiar formato directo.