Why does rich formatting copied from Word not translate well into ADDA's HTML editor?

Why does rich formatting copied from Word not translate well into ADDA's HTML editor?

When you copy text with rich formatting from Word or Outlook and paste it into ADDA’s HTML editor, the formatting may not display correctly. This is because Word and email programs use special formatting that HTML editors can't always interpret properly. To avoid issues, it's best to use plain text or apply basic formatting directly in the HTML editor.