Interactive Thesaurus Functions
In the MGDLIT file a thesaurus is available for the search field "controlled term". These
controlled terms, which are selected by reviewers, describe the content of the quoted
documents in more details than titles can do.
The thesaurus consists of an hierarchical list of keywords, which form a controlled
vocabulary, and can be browsed interactively. The keywords are given as acronyms and as full
text explanation. By clicking the folder icon the next level of more specific (narrower terms
or NT) or more general (broader terms or BT) keywords are displayed, respectively. After
clicking the acronym the keyword is copied to the query field at the bottom of the
index window and supplemented by the relationship code NT; that means that more
specific keywords are also taken into account during the retrieval.
The history of the browsing is given in the first lines of the index window (acronyms
and full text explanation in gray) and separated from the actual thesaurus display by a
blank line.
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Sorting of hitlists
