* ext.tex: documentation for extending, reference counts, and embedding
  (formerly ../misc/{EXTENDING,REFCNT,EMBEDDING}).  Also affects Makefile.
* text2latex.py: script to do part of the conversion from an plain ASCI
  text file (in my particular style) to LaTeX.
  (Chapter/section/subsection headers, and verbatim sections.)
* partparse.py, texipre.dat, fix.el, Makefile: Minor cleanup of latex ->
  info conversion process (at least it works again, and with less
  debugging output).  Removed fix.sh.
* lib1.tex (section{Built-in Functions}): adapt description of str() and
  repr() to new situation.
* lib3.tex (Module os): added exec*() variants.
* lib3.tex (Module posix): added execve().
* lib2.tex (Module array): documented reality; remove typecode and
itemsize, add byteswap, rename read/write to fromfile/tofile, and
re-alphabetized.
* lib1.tex (Built-in Functions): renamed bagof() to filter().
diff --git a/Doc/ref/ref3.tex b/Doc/ref/ref3.tex
index 855dc82..41ce234 100644
--- a/Doc/ref/ref3.tex
+++ b/Doc/ref/ref3.tex
@@ -583,10 +583,12 @@
 (The reverse is not true --- if \verb\x\ is a list object,
 \verb\x.__getitem__(i)\ is not equivalent to \verb\x[i]\.)
 
-Except for \verb\__repr__\ and \verb\__cmp__\, attempts to execute an
+Except for \verb\__repr__\, \verb\__str__\ and \verb\__cmp__\,
+attempts to execute an
 operation raise an exception when no appropriate method is defined.
 For \verb\__repr__\ and \verb\__cmp__\, the traditional
 interpretations are used in this case.
+For \verb\__str__\, the \verb\__repr__\ method is used.
 
 
 \subsection{Special methods for any type}
@@ -612,8 +614,12 @@
 the interpreter exits.
 
 \item[\tt __repr__(self)]
-Called by the \verb\print\ statement and conversions (reverse quotes) to
-compute the string representation of an object.
+Called by the \verb\repr()\ built-in function and by conversions
+(reverse quotes) to compute the string representation of an object.
+
+\item[\tt __str__(self)]
+Called by the \verb\str()\ built-in function and by the \verb\print\
+statement compute the string representation of an object.
 
 \item[\tt __cmp__(self, other)]
 Called by all comparison operations.  Should return -1 if