In order to re-arrange or organize the tabs at the top of the document view simply follow these steps:
- Access the hamburger icon (the horizontal stacked lines to the left of the tabs).
- Hover your cursor over the title of the tab you'd like to move.
- Pick up the the title you'd like to move and drag it to its new position in the list of titles.
- Repeat step 2 & 3 until you're happy with the tabs' organization.