9 lines
147 B
XML
9 lines
147 B
XML
|
<!DOCTYPE doc
|
||
|
[
|
||
|
<!ELEMENT doc EMPTY>
|
||
|
<!NOTATION a SYSTEM "a">
|
||
|
<!NOTATION b SYSTEM "b">
|
||
|
<!ATTLIST doc att NOTATION(a|b) #IMPLIED>
|
||
|
]>
|
||
|
<doc/>
|