Z:gnu-man-db-manpages--f55aed-B=3Cindex=3E databases are used du/en

B databases are used during the search, and are updated by the B<%mandb%> program. Depending on your installation, this may be run by a periodic cron job, or may need to be run manually after new manual pages have been installed. To produce an old style text B database from the relative B database, issue the command: