===================================================================
RCS file: /cvs/mandoc/INSTALL,v
retrieving revision 1.20
retrieving revision 1.24
diff -u -p -r1.20 -r1.24
--- mandoc/INSTALL	2017/07/28 14:57:56	1.20
+++ mandoc/INSTALL	2021/09/20 13:25:42	1.24
@@ -1,4 +1,4 @@
-$Id: INSTALL,v 1.20 2017/07/28 14:57:56 schwarze Exp $
+$Id: INSTALL,v 1.24 2021/09/20 13:25:42 schwarze Exp $
 
 About the portable mandoc distribution
 --------------------------------------
@@ -18,7 +18,7 @@ tech@ mailing list, too.
 
 Enjoy using the mandoc toolset!
 
-Ingo Schwarze, Karlsruhe, July 2017
+Ingo Schwarze, Karlsruhe, September 2021
 
 
 Installation
@@ -54,8 +54,6 @@ generates.  If anything looks wrong or different from 
 wish, read the file "configure.local.example", create and edit
 a file "configure.local", and re-run "./configure" until the
 result seems right to you.
-On Solaris 10 and earlier, you may have to run "ksh ./configure"
-because the native /bin/sh lacks some POSIX features.
 
 5. Run "make".
 Any POSIX-compatible make, in particular both BSD make and GNU make,
@@ -67,9 +65,15 @@ installed to the intended places.  Otherwise, put some
 variables into "configure.local" and go back to step 4.
 
 7. Optionally run the regression suite.
-Basically, that amounts to "cd regress && ./regress.pl".
-But you should probably look at "./mandoc -l regress/regress.pl.1"
-first.
+Basically, that amounts to "make regress" to do a standard regression
+run, running all tests.  For more fine-grained control,
+read "./mandoc -l regress/regress.pl.1",
+then run "cd regress && ./regress.pl" with optional arguments.
+The regression suite requires a reasonably modern Perl interpreter.
+Examples of systems that are too old to run the regression suite
+include Solaris 9, Solaris 10, and Mac OS X 10.4 Tiger.
+On Solaris 11, the suite does run, but some tests fail;
+look at the BUGS section of that manual page.
 
 8. Run "sudo make install".  If you intend to build a binary
 package using some kind of fake root mechanism, you may need a
@@ -83,12 +87,14 @@ apropos(1) will not find the new pages.
 
 10. To set up a man.cgi(8) server, read its manual page.
 
-Note that some man(7) pages may contain low-level roff(7) markup
-that mandoc does not yet understand.  On some BSD systems using
-mandoc, third-party software is vetted on whether it may be formatted
-with mandoc.  If not, groff(1) is pulled in as a dependency and
-used to install a pre-formatted "catpage" instead of directly as
-manual page source.
+Note that a very small number of man(7) pages contain low-level
+roff(7) markup that mandoc does not yet understand.  On some BSD
+systems using mandoc, third-party software is vetted on whether it
+may be formatted with mandoc.  If not, groff(1) is pulled in as a
+dependency and used to install pre-formatted "catpages" instead of
+manual page sources.  This mechanism is used much less frequently
+than in the past.  On OpenBSD, only 25 out of about 10000 ports
+still require formatting with groff(1).
 
 
 Understanding mandoc dependencies