Mention mandoc.db(5), makewhatis(8), and weekly(8).

Omission noticed by espie@ long ago, and wording tweaked by jmc@.

1 files changed, 14 insertions, 2 deletions

diff --git a/man.1 b/man.1
index 5eae0e2e..0d2976ba 100644
--- a/man.1
+++ b/man.1
@@ -1,4 +1,4 @@
-.\"	$Id: man.1,v 1.34 2018/11/22 11:30:23 schwarze Exp $
+.\"	$Id: man.1,v 1.35 2019/03/09 15:55:01 schwarze Exp $
 .\"
 .\" Copyright (c) 1989, 1990, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -31,7 +31,7 @@
 .\"
 .\"     @(#)man.1	8.2 (Berkeley) 1/2/94
 .\"
-.Dd $Mdocdate: November 22 2018 $
+.Dd $Mdocdate: March 9 2019 $
 .Dt MAN 1
 .Os
 .Sh NAME
@@ -218,12 +218,24 @@ Guidelines for writing
 man pages can be found in
 .Xr mdoc 7 .
 .Pp
+The
+.Xr mandoc.db 5
+database is used for looking up manual page entries.
+In cases where the database is absent, outdated, or corrupt,
+.Nm
+falls back to looking for files called
+.Ar name . Ns Ar section .
 If both a formatted and an unformatted version of the same manual page,
 for example
 .Pa cat1/foo.0
 and
 .Pa man1/foo.1 ,
 exist in the same directory, only the unformatted version is used.
+The database is kept up to date with
+.Xr makewhatis 8 ,
+which is run by the
+.Xr weekly 8
+maintenance script.
 .Sh ENVIRONMENT
 .Bl -tag -width MANPATHX
 .It Ev MACHINE