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dtSearch Text Retrieval Engine Programmer's Reference
DOptions::SegmentationRulesFile Data Member
DStringProperty SegmentationRulesFile;

File segmentation rules, used to split up long text files into logical subdocuments during indexing. 

The SegmentationRulesFile is an XML file. To create the file, start dtSearch Desktop, click Options > Preferences > File Segmentation Rules and use the dialog box to set up the rules. The XML file will be saved as fileseg.xml in your dtSearch UserData folder. See File Segmentation Rules in the dtSearch Desktop help for information on this setting.

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