--- a/sbin/fpkg	Sun Nov 27 16:43:11 2022 +0100
+++ b/sbin/fpkg	Sun Nov 27 17:03:04 2022 +0100
@@ -29,35 +29,39 @@
 
   audit
 
-    `pkg audit` on the local host and all running visible jails
+    `pkg audit` on the local host and all running visible and
+    compatible jails
 
   update
 
-    `pkg update` on the local host and all running visible jails
+    `pkg update` on the local host and all running visible and
+    compatible jails
 
   upgrade
 
-    `pkg upgrade` on the local host and all running visible jails
+    `pkg upgrade` on the local host and all running visible and
+    compatible jails
 
   check-upgrade
   upgrade-check
 
-    `pkg upgrade -n` on the local host and all running visible jails
+    `pkg upgrade -n` on the local host and all running visible and
+    compatible jails
 
   check-fast-track
     Check packages installed from the LocalBSDPorts repository against
     the repositories `FreeBSD` and `LocalBSDPorts` on the local host
-    and all visible jails
+    and all visible and compatible jails
 
   config <name>
 
     Retrieve the value of a given configuration opeion on the local host
-    and all running visible jails
+    and all running visible and compatiblejails
 
   uversion
 
     Call `freebsd-version -u` on the local host and all running visible
-    jails
+    and compatible jails
 
   vv
 
@@ -86,6 +90,9 @@
                  (Default: "----> ")
 
   All other environment variables that affect `pkg` are effective also.
+
+  A "compatible jail" is a jail that'"'"'s "freebsd-version -u" is the same
+  as the host'"'"'s.
 '
 
 #