Unity Editor has a kind of an easter-egg where you can enable internal menus, like Project / Save As Template, Screenshots, etc.

Enabling internal menus

To enable those menus, go to Help / About Unity, then type internal, after that, you will see some new menus available on Unity Editor:

• Project / Save As Template
• Packages / Reset Package Database
• Window / Internal
  • Undo
  • Screenshot
    • Set Window Size
    • Set Window Size Small
    • Snap View
    • Snap View Toolbar
    • Snap View Extended Right
    • Snap Component
    • Snap Game View Component

Disabling internal menus

To disable the menus, go to Help / About Unity, then type internal again.