Each element needs to have its own attribute declaration (ATTLIST
). However, you can use a parameter entity to reuse the bulk of it.
Example...
<!ENTITY % attrs
'width CDATA "0"
height CDATA "0"
margin CDATA "0 0 0 0"
padding CDATA "0 0 0 0"
rotation CDATA "0"
halign (left|center|right|full) "center"
valign (top|middle|bottom|full) "middle"'>
<!ELEMENT elem1 (#PCDATA)>
<!ATTLIST elem1 %attrs;>
<!ELEMENT elem2 (#PCDATA)>
<!ATTLIST elem2 %attrs;>
Here's another example that has a mix of the parameter entity references along with attributes that only appear on the individual elements.
<!ELEMENT elem1 (#PCDATA)>
<!ATTLIST elem1
attr1 CDATA #IMPLIED
%attrs; >
<!ELEMENT elem2 (#PCDATA)>
<!ATTLIST elem2
attr2 CDATA #IMPLIED
%attrs; >