One way to navigate around a buffer (file) quickly is to use Avy. It comes with Spacemacs.
Press SPACE SPACE in an open file:
You'll see a prompt appear, asking you for a character:
Choose a word in the buffer (e.g. Rectangle). Type the first letter of that word (r). You'll see all of the words starting with r highlighted, with another letter in their place:
If you type the highlighted letter, you will jump directly to that word!
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