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Learning RStudio for R Statistical Computing by Edwin de Jonge, Mark van der Loo

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Folding, sectioning, and navigation

For easy editing and code inspection, the appearance of code in the editor can be customized. Code folding allows you to temporarily hide user-defined sections or indented blocks (functions, loops, and so on). RStudio also offers shortcuts and menus that allow for quick navigation between blocks and sections.

Code folding

Long scripts with many blocks of code can be hard to read. Often this is an indication that the script should be split into multiple files, but alternatively RStudio has a code folding feature that allows you to collapse blocks of code. All the blocks with curly brackets ({}) and code sections (see the following code snippets) can be folded. All foldable code is preceded with a small triangle. ...

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