How to differentiate between section headings:
- Level 1: Center, Bold or Italics, Titlecase
- Level 2: Center, Regular type, Titlecase
- Level 3: Flush left, Bold or Italics, Titlecase
- Level 4: Flush left, sentence-style capitalization
- Level 5: Beginning of paragraph, Bold or Italics, sentence-style capitalization, terminal period.