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Find   Ctrl+F     Search pattern
Replace   Ctrl+R     Replace pattern
Search again   F3     Repeat last search or replacement
Reverse search   Shift+F3     Repeat last search or replacement backwards

  Word search   Ctrl+Alt+Down     Search current word
  Reverse word search   Ctrl+Alt+Up     Search current word backwards

Go to line   Alt+F8     Go to line number
  Search pair   Ctrl+K     Search pair bracket