Z:gnu-man-db-manpages--9b8440-I=3Ckeyword=3E is usually a regula/en

I is usually a regular expression, as if (B<-r>) was used, or may contain wildcards (B<-w>), or match the exact keyword (B<-e>). Using these options, it may be necessary to quote the I or escape (\e) the special characters to stop the shell from interpreting them.