diff --git a/commun/commun.sty b/commun/commun.sty
index 360dd2e..7789308 100644
--- a/commun/commun.sty
+++ b/commun/commun.sty
@@ -375,6 +375,7 @@
 \newfontfamily\ChelseaMarket[Ligatures=TeX]{Chelsea Market}
 % \newfontfamily\Comic[Ligatures=TeX]{Comic Sans MS}
 \newfontfamily\DejaVuSans[Ligatures=TeX]{DejaVu Sans}
+\newfontfamily\dominofont[Ligatures=TeX]{DejaVu Sans}
 \newfontfamily\Delius[Ligatures=TeX]{Delius}
 \newfontfamily\DeliusSC[Ligatures=TeX]{Delius Swash Caps}
 \newfontfamily\FingerPaint[Ligatures=TeX]{Finger Paint}
@@ -399,6 +400,16 @@
 % }
 %--------------------------------------------------------
 
+%---
+% Print dominos
+\newcommand*\d@mino[3]{%
+  {\dominofont\char
+   \numexpr #1 + #2*7 + #3
+   \relax
+ }}
+\newcommand*\domino{\@ifstar{\d@mino{127075}}{\d@mino{127025}}}
+%---
+
 %--
 
 
diff --git a/jl-cours/jl-cours.cls b/jl-cours/jl-cours.cls
index 01b4996..948ac52 100644
--- a/jl-cours/jl-cours.cls
+++ b/jl-cours/jl-cours.cls
@@ -112,7 +112,7 @@
 
 %% tkz
 %%
-\usetkzobj{all} % on charge tous les objets
+%\usetkzobj{all} % on charge tous les objets: useless since version 3.02 of tkz-euclide
 
 %% sizing of the page
 %%
diff --git a/shortcuts/shortcuts.sty b/shortcuts/shortcuts.sty
index 041b5ad..9769466 100644
--- a/shortcuts/shortcuts.sty
+++ b/shortcuts/shortcuts.sty
@@ -195,13 +195,13 @@
 %                       {\ensuremath{ \mathbb{R} \setminus \{0\} }}
 %                       {\! \mathbb{R} \setminus \{0\} \!}
 %                       {\! \mathbb{R} \setminus \{0\} \!}
-            \!\!\!\!\ensuremath{\mathbb{R} \setminus \{0\}}\!\!\!
+            \ensuremath{\mathbb{R} \setminus \{0\}}
         }{
 %            \mathchoice{\! \mathbb{R} \setminus \{0, #2\} \!}
 %                       {\ensuremath{ \mathbb{R} \setminus \{0, #2\} }}
 %                       {\! \mathbb{R} \setminus \{0, #2\} \!}
 %                       {\! \mathbb{R} \setminus \{0, #2\} \!}
-            \!\!\!\!\ensuremath{\mathbb{R} \setminus \{0, #2\}}\!\!\!
+            \ensuremath{\mathbb{R} \setminus \{0, #2\}}
         }
     }{
         \IfNoValueTF {#2} {
@@ -209,13 +209,13 @@
 %                       {\ensuremath{ \mathbb{R} }}
 %                       {\mathbb{R}}
 %                       {\mathbb{R}}
-            \!\!\!\!\ensuremath{ \mathbb{R} }\!\!\!
+            \ensuremath{ \mathbb{R} }
         }{
 %            \mathchoice{\mathbb{R} \setminus \{#2\}}
 %                       {\ensuremath{ \mathbb{R} \setminus \{#2\} }}
 %                       {\mathbb{R} \setminus \{#2\}}
 %                       {\mathbb{R} \setminus \{#2\}}
-            \!\!\!\!\ensuremath{\mathbb{R} \setminus \{#2\}}\!\!\!
+            \ensuremath{\mathbb{R} \setminus \{#2\}}
         }
     }
 }
@@ -308,6 +308,12 @@
 \NewDocumentCommand \point{ G{A} G{0} G{0} } {
     $ #1\big(#2\ ;\ #3\big) $
 }
+
+%% print the acronym F.I. for "Forme indéterminée" in bold and sans-serif font.
+%%
+\NewDocumentCommand \FI{ } {
+    \textsf{\textbf{F.I.}}
+}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%