New Functions of Hand-Written Texts in Samsung Notes - Action Link
Samsung Notes on Galaxy Note8 supports Action Link feature through S Pen hovering when texts include information like phone number, URL and E-mail address. It helps quick direct access for the information (i.e. Call to phone number, Access to URL, Sending E-mail).
You may see the symptom like spread texts when creating note files with those information.
This is the purpose to distinguish general texts and texts with Action Link feature.