diff --git a/notes/cli/linux.scrbl b/notes/cli/linux.scrbl
index b0b109b..4e603cf 100644
--- a/notes/cli/linux.scrbl
+++ b/notes/cli/linux.scrbl
@@ -1102,7 +1102,7 @@
 
   # :net :ping :traceroute - check connection
   mtr google.com
-  mtr --report www.google.com
+  mtr --report www.google.com # -r --report
   ethtool eth0
   ip neigh show | grep REACHABLE
   ip link show
diff --git a/notes/editors/emacs.scrbl b/notes/editors/emacs.scrbl
index c85d569..ce25fee 100644
--- a/notes/editors/emacs.scrbl
+++ b/notes/editors/emacs.scrbl
@@ -283,10 +283,11 @@
   Composite programs in a high-level extension language running on a kernel in a
   low-level language.
 
-  | (boundp 'my=variable)      | test if symbol is defined   |
-  | (functionp 'dbg=function)  | test if function is defined |
-  | (functionp #'dbg=function) | test if function is defined |
-  | (macrop 'cl-pushnew)       | test if macro is defined    |
+  | (boundp 'my=variable)      | test if symbol is defined       |
+  | (functionp 'dbg=function)  | test if function is defined     |
+  | (functionp #'dbg=function) | test if function is defined     |
+  | (fboundp #'dbg=function)   | may be preferred over functionp |
+  | (macrop 'cl-pushnew)       | test if macro is defined        |
 
   # emacsclient in Guix is in the package
   guix install emacs-with-editor
diff --git a/notes/guix-guile-nix/guile.scrbl b/notes/guix-guile-nix/guile.scrbl
index afd785a..6a07f4d 100644
--- a/notes/guix-guile-nix/guile.scrbl
+++ b/notes/guix-guile-nix/guile.scrbl
@@ -436,6 +436,7 @@
 }
 
 @block{@block-name{Equality}
+  | eqv?   | (eqv? 3 (+ 1 2)) => #t     (eqv? 1 1.0) => #f        |
   |        | returns `#t' if X and Y are:                         |
   | equal? | the same type, and their contents or value are equal |
   | eq?    | the same object, except for numbers and characters   |
diff --git a/notes/guix-guile-nix/guix.scrbl b/notes/guix-guile-nix/guix.scrbl
index 38d1df2..aeee7b8 100644
--- a/notes/guix-guile-nix/guix.scrbl
+++ b/notes/guix-guile-nix/guix.scrbl
@@ -175,8 +175,7 @@
   # --development -D   include the development inputs of the next package,
   #                    i.e. 'guix'
   # Using glibc-locales should prevent 'warning: failed to install locale'
-  ./bootstrap
-  ./configure --localstatedir=/var
+  ./bootstrap && ./configure --localstatedir=/var --sysconfdir=/etc
   # on error:
   #   configure: error: 'guild' binary not found; please check your Guile installation.
   # do:
diff --git a/notes/guix-guile-nix/guix_system_configuration.scrbl b/notes/guix-guile-nix/guix_system_configuration.scrbl
index a175432..7fdda41 100644
--- a/notes/guix-guile-nix/guix_system_configuration.scrbl
+++ b/notes/guix-guile-nix/guix_system_configuration.scrbl
@@ -299,8 +299,9 @@
   /home/bost/.my-profiles/my-project     # from /var/guix/gcroots/auto/
   /home/bost/.config/guix/current
   /home/bost/.guix-profile
-  # the guix home profile /home/bost/.guix-home/profile is not listed in the
-  # output of `guix package --list-profiles`!
+  # the guix home profile /home/bost/.guix-home/profile and
+  # /run/current-system/profile are not listed in the output of
+  # `guix package --list-profiles`!
 
   # see also guix package --export-manifest
   guix package --list-profiles