If you deal with long source files or complicated code in Visual Studio, the RockScroll add-in is something you should try. It has become indispensable since I started using it! 🙂
RockScroll replaces the vertical scrollbar with a zoomed out view of the source file. As you scroll through code, a rectangular purple highlight (1 above) shows which section of the file you are currently viewing. Double-click on any word in the code and all its occurrences in the source file will be marked in purple in the editor and also shown marked in red (2 above) in the scrollbar. A great tool for code navigation!
Code Yarns 👨💻 
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