@c This is part of the Emacs manual.
-@c Copyright (C) 1985-1987, 1993-1995, 1997, 2001-2013 Free Software
+@c Copyright (C) 1985-1987, 1993-1995, 1997, 2001-2015 Free Software
@c Foundation, Inc.
@c See file emacs.texi for copying conditions.
@node Glossary
@item Alt
Alt is the name of a modifier bit that a keyboard input character may
-have. To make a character Alt, type it while holding down the @key{ALT}
-key. Such characters are given names that start with @kbd{Alt-}
+have. To make a character Alt, type it while holding down the @key{Alt}
+key. Such characters are given names that start with @kbd{@key{Alt}-}
(usually written @kbd{A-} for short). (Note that many terminals have a
-key labeled @key{ALT} that is really a @key{META} key.) @xref{User
+key labeled @key{Alt} that is really a @key{META} key.) @xref{User
Input, Alt}.
@item Argument
@item Autoloading
Emacs can automatically load Lisp libraries when a Lisp program requests a
-function from those libraries. This is called `autoloading'.
+function from those libraries. This is called ``autoloading''.
@xref{Lisp Libraries}.
@item Backtrace
Some human languages, such as English, are written from left to right.
Others, such as Arabic, are written from right to left. Emacs
supports both of these forms, as well as any mixture of them---this
-is `bidirectional text'. @xref{Bidirectional Editing}.
+is ``bidirectional text''. @xref{Bidirectional Editing}.
@item Bind
To bind a key sequence means to give it a binding (q.v.).
@item Buffer
The buffer is the basic editing unit; one buffer corresponds to one text
being edited. You normally have several buffers, but at any time you are
-editing only one, the `current buffer', though several can be visible
+editing only one, the current buffer, though several can be visible
when you are using multiple windows or frames (q.v.). Most buffers
are visiting (q.v.@:) some file. @xref{Buffers}.
Case conversion means changing text from upper case to lower case or
vice versa. @xref{Case}.
+@item Case Folding
+Case folding means ignoring the differences between case variants of
+the same letter: upper-case, lower-case, and title-case. Emacs
+performs case folding by default in text search. @xref{Lax Search}.
+
@item Character
Characters form the contents of an Emacs buffer. Also, key sequences
(q.v.@:) are usually made up of characters (though they may include
other input events as well). @xref{User Input}.
+@item Character Folding
+Character folding means ignoring differences between similarly looking
+characters, such as between @code{a}, and @code{@:a} and @code{@'a}.
+Emacs performs character folding by default in text search. @xref{Lax
+Search}.
+
@item Character Set
Emacs supports a number of character sets, each of which represents a
particular alphabet or script. @xref{International}.
screen line when displayed. We say that the text line is continued, and all
screen lines used for it after the first are called continuation
lines. @xref{Continuation Lines}. A related Emacs feature is
-`filling' (q.v.).
+filling (q.v.).
@item Control Character
A control character is a character that you type by holding down the
-@key{CTRL} key. Some control characters also have their own keys, so
-that you can type them without using @key{CTRL}. For example,
+@key{Ctrl} key. Some control characters also have their own keys, so
+that you can type them without using @key{Ctrl}. For example,
@key{RET}, @key{TAB}, @key{ESC} and @key{DEL} are all control
characters. @xref{User Input}.
The particular form of copyleft used by the GNU project is called the
GNU General Public License. @xref{Copying}.
-@item @key{CTRL}
-The @key{CTRL} or ``control'' key is what you hold down
+@item @key{Ctrl}
+The @key{Ctrl} or control key is what you hold down
in order to enter a control character (q.v.). @xref{Glossary---C-}.
@item Current Buffer
The cursor is the rectangle on the screen which indicates the position
(called point; q.v.@:) at which insertion and deletion takes place.
The cursor is on or under the character that follows point. Often
-people speak of `the cursor' when, strictly speaking, they mean
-`point'. @xref{Point,Cursor}.
+people speak of ``the cursor'' when, strictly speaking, they mean
+``point''. @xref{Point,Cursor}.
@item Customization
Customization is making minor changes in the way Emacs works, to
@item Defun
A defun is a major definition at the top level in a program. The name
-`defun' comes from Lisp, where most such definitions use the construct
+``defun'' comes from Lisp, where most such definitions use the construct
@code{defun}. @xref{Defuns}.
@item @key{DEL}
@key{DEL} is a character that runs the command to delete one character
-of text before the cursor. It is typically either the @key{DELETE}
+of text before the cursor. It is typically either the @key{Delete}
key or the @key{BACKSPACE} key, whichever one is easy to type.
@xref{Erasing,DEL}.
@anchor{Glossary---Deletion of Files}
@item Deletion of Files
Deleting a file means erasing it from the file system.
-(Note that some systems use the concept of a ``trash can'', or ``recycle
-bin'', to allow you to ``undelete'' files.)
+(Note that some systems use the concept of a trash can, or recycle
+bin, to allow you to undelete files.)
@xref{Misc File Ops,Misc File Ops,Miscellaneous File Operations}.
@item Deletion of Messages
confusing for beginning users. @xref{Disabling}.
@item Down Event
-Short for `button down event' (q.v.).
+Short for ``button down event'' (q.v.).
@item Drag Event
A drag event is the kind of input event (q.v.@:) generated when you
@item Global
Global means ``independent of the current environment; in effect
throughout Emacs''. It is the opposite of local (q.v.). Particular
-examples of the use of `global' appear below.
+examples of the use of ``global'' appear below.
@item Global Abbrev
A global definition of an abbrev (q.v.@:) is effective in all major
@item Hyper
Hyper is the name of a modifier bit that a keyboard input character may
have. To make a character Hyper, type it while holding down the
-@key{HYPER} key. Such characters are given names that start with
+@key{Hyper} key. Such characters are given names that start with
@kbd{Hyper-} (usually written @kbd{H-} for short). @xref{User Input}.
@item Iff
@item Local
Local means ``in effect only in a particular context''; the relevant
kind of context is a particular function execution, a particular
-buffer, or a particular major mode. It is the opposite of `global'
-(q.v.). Specific uses of `local' in Emacs terminology appear below.
+buffer, or a particular major mode. It is the opposite of ``global''
+(q.v.). Specific uses of ``local'' in Emacs terminology appear below.
@item Local Abbrev
A local abbrev definition is effective only if a particular major mode
@xref{Locals}.
@item @kbd{M-}
-@kbd{M-} in the name of a character is an abbreviation for @key{META},
+@kbd{M-} in the name of a character is an abbreviation for @key{Meta},
one of the modifier keys that can accompany any character.
@xref{User Input,M-}.
@item @kbd{M-C-}
@kbd{M-C-} in the name of a character is an abbreviation for
-Control-Meta; it means the same thing as `@kbd{C-M-}' (q.v.).
+Control-Meta; it means the same thing as @kbd{C-M-} (q.v.).
@item @kbd{M-x}
@kbd{M-x} is the key sequence that is used to call an Emacs command by
@item Meta
Meta is the name of a modifier bit which you can use in a command
-character. To enter a meta character, you hold down the @key{META}
+character. To enter a meta character, you hold down the @key{Meta}
key while typing the character. We refer to such characters with
names that start with @kbd{Meta-} (usually written @kbd{M-} for
-short). For example, @kbd{M-<} is typed by holding down @key{META}
+short). For example, @kbd{M-<} is typed by holding down @key{Meta}
and at the same time typing @kbd{<} (which itself is done, on most
terminals, by holding down @key{SHIFT} and typing @kbd{,}).
@xref{User Input,Meta}.
-On some terminals, the @key{META} key is actually labeled @key{ALT}
-or @key{EDIT}.
+On some terminals, the @key{Meta} key is actually labeled @key{Alt}
+or @key{Edit}.
@item Meta Character
A Meta character is one whose character code includes the Meta bit.
yanking (q.v.@:) it. @xref{Killing}.
@item MULE
-MULE refers to the Emacs features for editing multilingual
-non-@acronym{ASCII} text using multibyte characters (q.v.).
-@xref{International}.
+@cindex MULE
+Prior to Emacs 23, @acronym{MULE} was the name of a software package
+which provided a @dfn{MULtilingual Enhancement} to Emacs, by adding
+support for multiple character sets (q.v.). @acronym{MULE} was later
+integrated into Emacs, and much of it was replaced when Emacs gained
+internal Unicode support in version 23.
+
+Some parts of Emacs that deal with character set support still use the
+@acronym{MULE} name. @xref{International}.
@item Multibyte Character
A multibyte character is a character that takes up several bytes in a
Quoting means depriving a character of its usual special significance.
The most common kind of quoting in Emacs is with @kbd{C-q}. What
constitutes special significance depends on the context and on
-convention. For example, an ``ordinary'' character as an Emacs command
+convention. For example, an ordinary character as an Emacs command
inserts itself; so in this context, a special character is any character
that does not normally insert itself (such as @key{DEL}, for example),
and quoting it makes it insert itself as if it were not special. Not
@item Register
Registers are named slots in which text, buffer positions, or
rectangles can be saved for later use. @xref{Registers}. A related
-Emacs feature is `bookmarks' (q.v.).
+Emacs feature is bookmarks (q.v.).
@anchor{Glossary---Regular Expression}
@item Regular Expression
@anchor{Glossary---Server}
@item Server
-Within Emacs, you can start a `server' process, which listens for
-connections from `clients'. This offers a faster alternative to
+Within Emacs, you can start a ``server'' process, which listens for
+connections from ``clients''. This offers a faster alternative to
starting several Emacs instances. @xref{Emacs Server}, and
@ref{Glossary---Daemon}.
@c This is only covered in the lispref, not the user manual.
@ignore
@item Session Manager
-Some window systems (q.v.@:) provide a tool called a `session manager'.
+Some window systems (q.v.@:) provide a tool called a ``session manager''.
This offers the ability to save your windows when you log off,
and restore them after you log in again.
@end ignore
A sexp (short for ``s-expression'') is the basic syntactic unit of
Lisp in its textual form: either a list, or Lisp atom. Sexps are also
the balanced expressions (q.v.@:) of the Lisp language; this is why
-the commands for editing balanced expressions have `sexp' in their
+the commands for editing balanced expressions have @samp{sexp} in their
name. @xref{Expressions,Sexps}.
@item Simultaneous Editing
@xref{Bugs}.
@item Text
-`Text' has two meanings (@pxref{Text}):
+``Text'' has two meanings (@pxref{Text}):
@itemize @bullet
@item
@item Variable
A variable is an object in Lisp that can store an arbitrary value.
Emacs uses some variables for internal purposes, and has others (known
-as `user options'; q.v.@:) just so that you can set their values to
+as ``user options''; q.v.@:) just so that you can set their values to
control the behavior of Emacs. The variables used in Emacs that you
are likely to be interested in are listed in the Variables Index in
this manual (@pxref{Variable Index}). @xref{Variables}, for
can display the contents of one buffer (q.v.@:) at any time.
@xref{Screen}, for basic information on how Emacs uses the screen.
@xref{Windows}, for commands to control the use of windows. Some
-other editors use the term ``window'' for what we call a `frame'
+other editors use the term ``window'' for what we call a ``frame''
(q.v.@:) in Emacs.
@item Window System