Returns true
if this DSM element is a pseudo-element
and false
otherwise.
Pseudo-elements are technically not XML elements, however, most of them are
associated with other XML DOM nodes (for example, pseudo-elements with
'#TEXT'
name represent DOM Text nodes).
#CUSTOM
elements may be used to represent any data items as
"elements" and "attributes", which allow operating with them.
(Note that most of template components, functions and properties
can work only with elements and attributes!)
For more details about pseudo-elements, see FlexDoc/XML documentation.