{macros} is for questions specifically concerning TeX's macro processor. Note that, because TeX uses macros ubiquitously, most questions about code that uses macros are not looking for information about how macros work, and so are not appropriate for this tag.
{macros} is for questions specifically concerning TeX's macro processor.
Questions about the peculiarities of such TeX commands as \def, \edef, \expandafter, \noexpand, or \futurelet are appropriate, or LaTeX commands such as \newcommand.
Note that, because TeX uses macros ubiquitously, most questions about code that uses macros are not looking for information about how macros work, and so are not appropriate for this tag.
