2.3.3.13 put
Quirks Mode, IE7 Mode, IE8 Mode, and IE9 Mode (All Versions)
String that specifies the function to be called when the value of the property is set. A PUBLIC:PROPERTY element that specifies both a get and put attribute is a read/write property.
The put attribute is declared in markup only.
This attribute is used by the PUBLIC:PROPERTY element.