<name> <command>
Defines an alias <name> that executes <command>. The <command>
should be in the standard "command argument [nestedcommand argument]"
arguments to the alias; they'll be filled with the first, second, etc.
arguments. $1, $2, etc. can be used for required arguments. @1, @2,
etc. can be used for optional arguments. $* simply means "all
remaining arguments," and cannot be combined with optional arguments.