* manual/startup.texi (Environment Access): Fix putenv prototype
according to recent changes.
Reported by Andries Brouwer <Andries.Brouwer@cwi.nl>, closes
PR libc/1692.
@comment stdlib.h
@comment SVID
-@deftypefun int putenv (const char *@var{string})
+@deftypefun int putenv (char *@var{string})
The @code{putenv} function adds or removes definitions from the environment.
If the @var{string} is of the form @samp{@var{name}=@var{value}}, the
definition is added to the environment. Otherwise, the @var{string} is