DOM level 2 StyleSheets : What means "binding-specific casting methods" from Lee Hyoung Moon on 1999-10-27 (www-dom@w3.org from October to December 1999)

From: Lee Hyoung Moon <darkness@www.paichai.ac.kr>
Date: Wed, 27 Oct 1999 18:32:53 +0900
To: <www-dom@w3.org>
Message-ID: <000901bf205e$44018c30$738ffacb@paichai.ac.kr>

Please tell me...
I don't understand this sentence.
" binding-specific casting methods ".

An instance of the LinkStyle interface can be
obtained using binding-specific casting methods on an instance of a linking
node (HTMLLinkElement [p.76] , HTMLStyleElement [p.78] or
ProcessingInstruction [p.64] in DOM Level 2).

interface StyleSheet {
readonly attribute DOMString type;
attribute boolean disabled;
readonly attribute Node ownerNode;
readonly attribute StyleSheet parentStyleSheet;
readonly attribute DOMString href;
readonly attribute DOMString title;
readonly attribute MediaList media;
};

interface HTMLLinkElement : HTMLElement {
attribute boolean disabled;
attribute DOMString charset;
attribute DOMString href;
attribute DOMString hreflang;
attribute DOMString media;
attribute DOMString rel;
attribute DOMString rev;
attribute DOMString target;
attribute DOMString type;
};

interface HTMLStyleElement : HTMLElement {
attribute boolean disabled;
attribute DOMString media;
attribute DOMString type;
};

interface ProcessingInstruction : Node {
readonly attribute DOMString target;
attribute DOMString data;
// raises(DOMException) on setting
};

-------------------------------------------
Org   : Graduate School, Paichai University
        Dept. of Computer Engineering,
        Lee Hyoung Moon
WWW   : http://www.paichai.ac.kr/~darkness/
EMail : darkness@mail.paichai.ac.kr
        darkness@backsan.paichai.ac.kr
        darkness@markup.paichai.ac.kr
Phone : 011-421-7319
ICQ   : 6389224
-------------------------------------------

Received on Wednesday, 27 October 1999 05:31:46 UTC