Lists
Always use HTML tags to create lists.
Always use the <ol> tag for numbered (ordered) lists, and the <ul> tag for bulleted (unordered) lists.
Drupal will create these tags for you if you click one of these icons in the editor:

Always use the <ol> tag for numbered (ordered) lists, and the <ul> tag for bulleted (unordered) lists.
Drupal will create these tags for you if you click one of these icons in the editor: