backstage

When you click on the File button in the top left corner you will see a collection of tabs and buttons called Backstage.
The icons, tabs and buttons are slightly different between the different versions.
There is no StartFromScratch option for backstage.

Children

Excel

These buttons were removed (Save As - FileSaveAs, Open - FileOpen, History - HistoryTab, Feedback - OfficeFeedback, Exit - FileExit).
These tabs were removed (Publish - Publish2Tab, Feedback - TabOfficeFeedback).

Word

PowerPoint

Outlook

Info
Open & Export
Save As
Save Attachments
Print
Close
Office Account
Options
Exit