FreeWAIS-sf is an extension of the freeWAIS software provided by the the Clearinghouse for Networked Information Discovery and Retrieval (CNIDR). The SF suffix in the software name stands for "structured fields," an indexing and search feature which distinguishes this software from its predecessors. WWW: http://ls6-www.informatik.uni-dortmund.de/ir/projects/freeWAIS-sf/