| 摘要 |
The namespace that is to be referred to for handling a document described in a markup language is identified. A namespace detection unit 310 reads out an XML document which is a processing target, and detects the line where the namespace has been described. In a case that the correct namespace cannot be identified, a namespace identifying unit 312 searches for and narrows down the namespace candidates while referring to a namespace information storage unit 316. Then, the plug-ins that correspond to the namespace candidates thus narrowed down are loaded. A candidate screen display unit 314 displays the display candidates created according to the respective plug-ins so as to allow the user to select one from among these display candidates. The namespace information storage unit 316 stores beforehand the relation between the character strings, such as tag names and so forth, which are used as a key for obtaining the namespace and which are described in a document, and the corresponding namespaces.
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