E> object provides the following methods.
</P><UL CLASS="itemize"><LI CLASS="li-itemize">
<CODE>$(f.arity)</CODE>: the arity if the function.
</LI></UL><H3 CLASS="subsection"><A NAME="htoc345">12.1.10</A>&#XA0;&#XA0;Rule</H3><P><A NAME="obj:Rule"></A><A NAME="object:Rule"></A><A NAME="@default377"></A><A NAME="@obj19"></A></P><P>Parent objects: <CODE>Object</CODE>.</P><P>The <CODE>Rule</CODE> object represents a build rule.
It does not currently have any methods.
</P><H3 CLASS="subsection"><A NAME="htoc346"