+ If attribute <literal>backendelementset</literal> is given, that holds
+ elementset to be transmitted to backend. An empty value of
+ <literal>backendelementset</literal> has the effect of omitting
+ any Comp-Spec (and elementset) sent to backend.
+ </para>
+ <para>If <literal>backendelementset</literal> is omitted, the element
+ set from client is used, except if <literal>marcxml</literal> is used.
+ In that case (using <literal>marcxml</literal>), no Comp-Spec and no
+ elementset is sent to backend.
+ </para>
+ <para>