Z:gnu-man-db-manpages--a68e90-If $B=3CMANLESS=3E is set, its val/en

If $B is set, its value will be used as the default prompt string for the B pager, as if it had been passed using the B<-r> option (so any occurrences of the text B<$MAN_PN> will be expanded in the same way). For example, if you want to set the prompt string unconditionally to \(lqmy prompt string\(rq, set $B to \(oqB<-Psmy\ prompt\ string>\(cq. Using the B<-r> option overrides this environment variable.