When SaveSectionSize is set to yes, indexer stores additional information about section size (messured in number of words) for every document section. Using section sizes makes it possible to generate better score values at search time by taking into account frequency of every search query word in its section.
Note: SaveSectionSize yes is also required for exact section match queries.
Setting SaveSectionSize to no makes search index size about 10% smaller. This slightly improves search performance, but makes search quality worse.
SaveSectionSize must have the same value in indexer.conf and search.htm.
The default value is yes.
SaveSectionSize appeared mnoGoSearch version 3.3.0. Versions prior to 3.3.0 did not store section sizes.