We will put almost all the functions on the top toolbar so that you can change font, size, color alignment, etc. directly.
If the page contains more than one paragraph, you can tap previous or next arrow button besides save button to navigate through all the paragraphs and it will be automatically saved after tapping arrow buttons.
Now, when you tap save button, save button will be disabled and the editor will not be quitted so that you can continue to edit. When you start typing again, save button will be enabled again. Tap close button to exit editor at any time.