X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/ae0d461554a9351a0d897ce0e60b47fc9670431e..576e9b27cb20ab6a87314482952355cc53a824fa:/doc/lispref/symbols.texi

diff --git a/doc/lispref/symbols.texi b/doc/lispref/symbols.texi
index 9f91654990..e6dc4df629 100644
--- a/doc/lispref/symbols.texi
+++ b/doc/lispref/symbols.texi
@@ -1,6 +1,6 @@
 @c -*-texinfo-*-
 @c This is part of the GNU Emacs Lisp Reference Manual.
-@c Copyright (C) 1990-1995, 1998-1999, 2001-2013 Free Software
+@c Copyright (C) 1990-1995, 1998-1999, 2001-2015 Free Software
 @c Foundation, Inc.
 @c See the file elisp.texi for copying conditions.
 @node Symbols
@@ -35,7 +35,7 @@ otherwise.
 @section Symbol Components
 @cindex symbol components
 
-  Each symbol has four components (or ``cells''), each of which
+  Each symbol has four components (or cells), each of which
 references another object:
 
 @table @asis
@@ -176,7 +176,7 @@ cause complete confusion.
 @cindex obarray
 @cindex bucket (in obarray)
   When the Lisp reader encounters a symbol, it reads all the characters
-of the name.  Then it ``hashes'' those characters to find an index in a
+of the name.  Then it hashes those characters to find an index in a
 table called an @dfn{obarray}.  Hashing is an efficient method of
 looking something up.  For example, instead of searching a telephone
 book cover to cover when looking up Jan Jones, you start with the J's
@@ -525,7 +525,7 @@ The value is an expression for determining whether the named menu item
 should be enabled in menus.  @xref{Simple Menu Items}.
 
 @item mode-class
-If the value is @code{special}, the named major mode is ``special''.
+If the value is @code{special}, the named major mode is special.
 @xref{Major Mode Conventions}.
 
 @item permanent-local
@@ -539,8 +539,9 @@ deleted from the local value of a hook variable when changing major
 modes.  @xref{Setting Hooks}.
 
 @item pure
-This property is used internally to mark certain named functions for
-byte compiler optimization.  Do not set it.
+If the value is non-@code{nil}, the named function is considered to be
+side-effect free.  Calls with constant arguments can be evaluated at
+compile time.  This may shift run time errors to compile time.
 
 @item risky-local-variable
 If the value is non-@code{nil}, the named variable is considered risky