Run one piece of code if Target Markdown mode interactive mode is turned on and another piece of code otherwise.
R code to run if Target Markdown interactive mode is activated.
R code to run if Target Markdown interactive mode is not activated.
Visit <books.ropensci.org/targets/markdown.html> to learn about Target Markdown and interactive mode.
If Target Markdown interactive mode is not turned on,
the function returns the result of running the code.
Otherwise, the function invisibly returns
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