Emacs supports four kinds of mouse events: click events, drag events,
button-down events, and motion events. All mouse events are represented
-as lists. The @acronym{CAR} of the list is the event type; this says which
+as lists. The @sc{car} of the list is the event type; this says which
mouse button was involved, and which modifier keys were used with it.
The event type can also distinguish double or triple button presses
(@pxref{Repeat Events}). The rest of the list elements give position
key binding purposes. For a keyboard event, the event type equals the
event value; thus, the event type for a character is the character, and
the event type for a function key symbol is the symbol itself. For
-events that are lists, the event type is the symbol in the @acronym{CAR} of
+events that are lists, the event type is the symbol in the @sc{car} of
the list. Thus, the event type is always a symbol or a character.
Two events of the same type are equivalent where key bindings are
value, @var{arg}. The argument may be a symbol, a number, or a list.
If it is @code{nil}, the value 1 is returned; if it is @code{-}, the
value @minus{}1 is returned; if it is a number, that number is returned;
-if it is a list, the @acronym{CAR} of that list (which should be a number) is
+if it is a list, the @sc{car} of that list (which should be a number) is
returned.
@end defun