UnparsedEntityDecl(p, name$, base$, sysid$, pubid$, notation$)
<!ENTITY logo SYSTEM "images/logo.gif" NDATA gif> |
the name$ parameter would be "logo", sysid$ would be "images/logo.gif" and
notation$ would be "gif". For this example the pubid$ parameter would be Nil.
The base$ parameter would be whatever has been set with parser:SetBase().
If not set, it would be Nil.
Note that UnparsedEntityDecl() is obsolete and you should use EntityDecl()
instead.