Added docs for delattr
diff --git a/Doc/libfuncs.tex b/Doc/libfuncs.tex
index 379011d..923daf3 100644
--- a/Doc/libfuncs.tex
+++ b/Doc/libfuncs.tex
@@ -51,6 +51,15 @@
if it consists of a single expression.
\end{funcdesc}
+\begin{funcdesc}{delattr}{object\, name}
+ This is a relative of \code{setattr}. The arguments are an
+ object and a string. The string must be the name
+ of one of the object's attributes. The function deletes
+ the named attribute, provided the object allows it. For example,
+ \code{setattr(\var{x}, '\var{foobar}')} is equivalent to
+ \code{del \var{x}.\var{foobar}}.
+\end{funcdesc}
+
\begin{funcdesc}{dir}{}
Without arguments, return the list of names in the current local
symbol table. With a module, class or class instance object as