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corrected introduction to macros in macros.md #467

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6 changes: 3 additions & 3 deletions src/macros.md
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# Macros

A number of minor features of Rust are not central enough to have their own
syntax, and yet are not implementable as functions. Instead, they are given
names, and invoked through a consistent syntax: `some_extension!(...)`.
The functionality and syntax of Rust can be extended with custom definitons
called macros. They are given names, and invoked through a consistent
syntax:`some_extension!(...)`.

There are two ways to define new macros:

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