SGML support files can be found in $HARVEST_HOME/lib/gatherer/sgmls-lib/. For example, these are the default pathnames for HTML summarizing using the SGML summarizing mechanism:
$HARVEST_HOME/lib/gatherer/sgmls-lib/HTML/html.dtd
$HARVEST_HOME/lib/gatherer/sgmls-lib/HTML/HTML.decl
$HARVEST_HOME/lib/gatherer/sgmls-lib/HTML/HTML.sum.tbl
The location of the DTD file must be specified in the sgmls catalog ( $HARVEST_HOME/lib/gatherer/sgmls-lib/catalog). For example:
DOCTYPE HTML HTML/html.dtd
The SGML.sum program looks for the .decl file in the default location. An alternate pathname can be specified with the -d option to SGML.sum.
The summarizer looks for the .sum.tbl file first in the Gatherer's lib directory and then in the default location. Both of these can be overridden with the -t option to SGML.sum.