Parameter Entities for Link Attributes
<!ENTITY % link-attributes
"xlink:type CDATA #FIXED 'simple'
xlink:role CDATA #IMPLIED
xlink:title CDATA #IMPLIED
xmlns:xlink CDATA #FIXED 'http://www.w3.org/1999/xlink'
xlink:href CDATA #REQUIRED
xlink:show (new | replace | embed) #IMPLIED 'replace'
xlink:actuate (onRequest | onLoad) #IMPLIED 'onRequest'"
>
<!ELEMENT COMPOSER (#PCDATA)>
<!ATTLIST COMPOSER
%link-attributes;
>
<!ELEMENT AUTHOR (#PCDATA)>
<!ATTLIST AUTHOR
%link-attributes;
>
<!ELEMENT WEBSITE (#PCDATA)>
<!ATTLIST WEBSITE
%link-attributes;
>