Focused Editing mode takes over your screen and removes a lot of the distractions that your computer can throw at you. All you are left with is a blank background with the text at a larger size. There are separate display settings for many different parts of Focused Editing, all of which are controlled in the Preferences window in the Focused Editing pane. There are special settings for text zoom, margins around the text, the appearance of the text, whether or not scrollbars are visible, and if the text is editable. To enter Focused Editing, use the Enter Focused Editing menu item in the View menu. To exit this mode, move your mouse to the top of the screen to expose the menu bar and then use the Exit Focused Editing menu item in the View menu. Alternately you can press the close button in the upper left corner of the screen that is visible after moving the mouse.
While in Focused Editing mode, there is a button in the lower left corner of the screen that can automatically scroll the text down so you can read it without touching the computer. To stop this once it starts, click the stop button that appears where the arrow buttons were, or press the Escape key.
Separately, MacJournal also provides Full Screen mode, which helps maximize screen space on smaller screens.