Keyword Search selects the keywords to search the documents. How to use the Keyword Search is described as below.
This is useful when you seek for the historical matters, personal names and so on.

（a）The Keyword Search screen will be displayed when you click on the "Keyword Search" icon at the left side of the search screen, or select "Keyword Search" from the search menu.

（b）Please enter any keywords into the keyword box （circled by red） in this page.
*Moreover, it also performs the search by the keywords including their synonyms and related words （circled by blue）.
"Synonyms and Related Words ON"・・・Search keyword includes the synonyms and related words of the words entered by the user.
"Synonyms and Related Words OFF"・・・Search keyword only includes the words entered by the user.

（c）When you have entered the keywords, please click on the "Search" icon.