Which part of google docs allows you to quickly undo, redo, print, spell check, paint, or zoom?

Which part of google docs contains menus that you can open to find more options and features within Google Docs?

Which part of google docs allows you to change the size, color, font, and location of your text?

What does this button change?

What does this button change?

In Google Docs, what feature allows multiple users to work on the same document simultaneously?

What does the 'Suggesting' mode in Google Docs allow a user to do?