Toolkit, DARC

Four chapters on other operational substructure search systems follow. Jean Marcah and co-workers describe the Du Pont global technical information system Steve Welford and Clemens Jochum report on chemical structure registration for Beilstein Online Peter Rusch also covers Beilstein Onhne in a paper about substructure searching on Dialog and the DARC Toolkit which was described by Pascal Huguet is summarised in a chapter written by Bill Town with some suggestions from myself and Pierre Buffet of Questel. 

In the toolkit concept, a tool fulfils a specific function, can be used independently, may easily be replaced by another tool as necessary and is fully documented with respect to its function, implementation and use. A simple example of a tool is a molecular formula search module, which may be implemented for use within a DBMS, is easily replaceable by another molecular formula search module and whose molecular formula search capabilities and calls from any apphcation are fully documented. DARC tools are classified as simple tools and advanced tools. Examples of simple tools are ... 

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