3. The method of claim 1 , wherein the automatic re-scrolling is performed based on the determination of whether the scrolling of the textual content caused at least part of the applied left or right side border to exit the viewport.
3. The method of claim 1 , wherein the automatic re-scrolling is performed based on the determination of whether the scrolling of the textual content caused at least part of the applied left or right side border to exit the viewport. 4. The method of claim 3 , wherein the automatic re-scrolling is performed in response to determining that a portion less than the entire left or right side border exited the viewport as a result of the scrolling of the textual content.