diff --git a/Inst_eddies/Tests/examine_eddy.f90 b/Inst_eddies/Tests/examine_eddy.f90
index aa4ec1707eecf6bad7ccc9792075af8229d4cfe3..3ba59b9ffaf6b71f42f1a9d49ec9e6f1c9202f5d 100644
--- a/Inst_eddies/Tests/examine_eddy.f90
+++ b/Inst_eddies/Tests/examine_eddy.f90
@@ -4,7 +4,7 @@ program examine_eddy
   ! outside_points all the extrema of opposite sign (including those
   ! not associated to an eddy) plus the extrema of same sign
   ! associated to an eddy. Note that coord and outside_points may not
-  ! be exactly equal to waht they were in inst_eddies because: there
+  ! be exactly equal to what they were in inst_eddies because: there
   ! is a multiplication of coord by rad_to_deg when writing the
   ! shapefile and a multiplication by deg_to_rad when reading it;
   ! set_all_extr is called with a different value of dummy argument
diff --git a/Inst_eddies/inst_eddies.py.in b/Inst_eddies/inst_eddies.py.in
index c25df85034b9497c46336df3fb57567965726669..288e7a285159d30b4bb03687804e12198353cb38 100644
--- a/Inst_eddies/inst_eddies.py.in
+++ b/Inst_eddies/inst_eddies.py.in
@@ -18,10 +18,10 @@ import time
 import csv
 
 def loop_inst_eddies(files, bbox, d, my_slice):
-    """files is a sequence of file paths. The first file must exist,
-    others can be missing. bbox is a tuple of four real numbers. d is
-    a date index (integer value) for the first date. my_slice is the
-    slice index (integer value) in the SHPC.
+    """files is a sequence or iterator of file paths. The first file must
+    exist, others can be missing. bbox is a tuple of four real
+    numbers. d is a date index (integer value) for the first
+    date. my_slice is the slice index (integer value) in the SHPC.
 
     """
 
diff --git a/Trajectories/Documentation_texfol/documentation.tex b/Trajectories/Documentation_texfol/documentation.tex
index ae11b4b6d93d34573fcfdd42bbee906cc585a28d..855c437ca297e938f78f17482a49ca4912e39ca2 100644
--- a/Trajectories/Documentation_texfol/documentation.tex
+++ b/Trajectories/Documentation_texfol/documentation.tex
@@ -44,8 +44,8 @@ le graphe en composantes connexes, ou chercher le graphe amont ou aval
 à partir d'un noeud du graphe.
 
 Des bibliothèques Python de traitement de graphe semblent bien
-adaptées pour cette partie. En Python. Création d'une liste de chemins
-qui recouvrent tout le graphe.
+adaptées pour cette partie. Création d'une liste de chemins qui
+recouvrent tout le graphe.
 
 Vocabulaire : fusion pour \Eng{merging} et division pour
 \Eng{splitting}.
@@ -121,6 +121,22 @@ Mémoire vive nécessaire pour charger le graphe global sur 28 ans, sans
 attributs, avec Graph-tool : environ \np{6.1} GiB. Il faut au moins 11
 GiB avec Networkx.
 
+Script \verb+trajectory.py+. Cf. tableau \ref{tab:trajectory}.
+\begin{table}[htbp]
+  \centering
+  \begin{tabular}{llll}
+    Cas & v0.28 & v0.29 & v0.30 \\
+    \hline
+    Greece\_trajectories & OK & KO & OK \\
+    Division\_fusion & KO & OK & OK \\
+    Test\_order\_edges & OK & KO & OK \\
+    Traj\_component & KO & KO & OK \\
+  \end{tabular}
+  \caption{Tests du script \texttt{trajectory.py}. KO signifie que les
+    trajectoires obtenues par le script ne sont pas satisfaisantes.}
+  \label{tab:trajectory}
+\end{table}
+
 \section{\texttt{segments.py}}
 
 Définition d'un segment : si un tourbillon se divise, c'est-à-dire si
diff --git a/Trajectories/cost_function.py b/Trajectories/cost_function.py
index 17a3696480b122b8f0bf7b68e550dadd3ab31336..b4fec82e48a01223b953a6d42e92e201006470a2 100755
--- a/Trajectories/cost_function.py
+++ b/Trajectories/cost_function.py
@@ -11,7 +11,10 @@ Input:
 
 Output: the graph of segments with cost.
 
-The inst_eddies property of vertices is not modified by this script.
+The inst_eddies property of vertices is not modified by this
+script. All the content of the input graph is part of the output graph
+so the input file may be removed, if desired, after running this
+script.
 
 """
 
diff --git a/Trajectories/draw_segments.py b/Trajectories/draw_segments.py
index 8fb08473e1aec8338bbe12c3e3a2b1c76102499e..215976e8e3bd52d5d28a61003538547047db8725 100755
--- a/Trajectories/draw_segments.py
+++ b/Trajectories/draw_segments.py
@@ -2,9 +2,9 @@
 
 """This script reads a graph of segments in graph-tool or graphml
 format and creates the corresponding Graphviz file. If the graph has
-cost values then the edges are labeled with them. If the file
-traj_segm.json is found then the label of each node tells which
-trajectory the segment belongs to.
+cost values then the edges are labeled with them. If the option -t is
+given then the label of each node tells which trajectory the segment
+belongs to.
 
 """