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# Time for action – creating a macro for formatting keywords

We will use \newcommand again, but this time we will introduce a parameter that will contain our keyword. Let's just use it on some terms that we've got to know in this chapter:

1. Type this code example:
\documentclass{article}
\newcommand{\keyword}[1]{\textbf{#1}}
\begin{document}
\keyword{Grouping} by curly braces limits the
\keyword{scope} of \keyword{declarations}.
\end{document}
2. Typeset and notice the look of the keywords in the output:

## What just happened?

Let's look at the highlighted line in the code. The number 1 in the square brackets marks the number of arguments that we want to use in ...

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