I use Fn+Arrows to move around and edit code or large text without repositioning my hands. Combined with Shift and/or Ctrl you get really fast in modifying tex

I use Fn+Arrows to move around and edit code or large text without repositioning my hands. Combined with Shift and/or Ctrl you get really fast in modifying text, as you only switch both hands blindly between "navigate/select" position and "write" position. Examples: You start modifying a long sentence and realize that you need to rewrite the text after your cursor? --> Shift+Ctrl+Right let's you quickly select words, Shift+Fn+Right selects the whole line to your right. The next keystroke will replace everything you just highlighted with your new input. Need to add a line of code above/below the line you just modified? --> Fn+Right, then Enter, to start a new line below the cursor. --> Fn+Left, then Enter, to start a new line above the cursor.