- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+/*
+
+@deftypefn Supplemental int putenv (const char *@var{string})
+
+Uses @code{setenv} or @code{unsetenv} to put @var{string} into
+the environment or remove it. If @var{string} is of the form
+@samp{name=value} the string is added; if no @samp{=} is present the
+name is unset/removed.
+
+@end deftypefn
+
+*/