• First Steps: Getting Started | View Modes | Colors+Fonts | Sounds | Profiles
• Navigating: Scrolling+Zooming | Bookmarks | Jumps Window | Headings | Find + Replace
• Writing + Editing: Segment Focus | Lookups | Spell Check | Comments | Repository | Markup Formatting | ToDo Notes | Sprint Writing | Word Count
• Managing Projects: Tags | Filtering | Files + Projects | Backups | Print+Export
• Special Interest: File Locations | Text Statistics | Markup Export | RegEx | Math Calculations

Click on screenshot-areas for details: