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7) ⌘ + D or Ctrl + D

6) ⌥ + Click or Alt + Click

5) ⌥ + ↑ / ↓ or Alt + ↑ / ↓

4) ⌥ + ⇧ + ↑ / ↓ or Alt + ⇧ + ↑ / ↓

3) ⌘ + / or Ctrl + /

2) ⌥ + ⇧ + i or Alt + ⇧ + i

1) ⌥ + ⇧ + Mouse Drag or Alt + ⇧ + Mouse Drag

Bonus:
Top / Bottom of File: ⌘ + ↑ / ↓ or Ctrl + Home / End
Hide / Show Sidebar: ⌘ + B or Ctrl + B