XML - 公開報價預計爲屬性

Question

我想添加一個DTD以下XML，但我得到Open quote is expected for attribute "play" associated with an element type "movie"

<?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE table [ 
<!ATTLIST movie play (yes | No) > 
]> 
<table> 
    <movie play="yes"> 
    </movie> 
</table> 

Answer 1

是必需的默認值，如：

<!ATTLIST movie play (Yes|No) "Yes"> 

的錯誤消息可能會更好:-)