[genius] * examples/duffing-equation-trajectories.gel: Add a comment for drawing only the last segment

[Jiri (George) Lebl <jirka src gnome org>]

commit f48a03955f58ca29808c85727d704947d277b707
Author: Jiri (George) Lebl <jiri lebl gmail com>
Date:   Tue Oct 9 23:18:20 2018 -0500

            * examples/duffing-equation-trajectories.gel: Add a comment
              for drawing only the last segment

 ChangeLog                                  | 5 +++++
 examples/duffing-equation-trajectories.gel | 3 +++
 2 files changed, 8 insertions(+)
---
diff --git a/ChangeLog b/ChangeLog
index edb8b002..4e4d85b7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Oct 09 23:18:17 2018  Jiri (George) Lebl <jirka 5z com>
+
+       * examples/duffing-equation-trajectories.gel: Add a comment
+         for drawing only the last segment
+
 Tue May 15 14:33:26 2018  Jiri (George) Lebl <jirka 5z com>
 
        * Release 1.0.24
diff --git a/examples/duffing-equation-trajectories.gel b/examples/duffing-equation-trajectories.gel
index 388e26b0..fdb00db7 100644
--- a/examples/duffing-equation-trajectories.gel
+++ b/examples/duffing-equation-trajectories.gel
@@ -21,6 +21,9 @@ ttinterval = 0.1;
 
 for tt = 0 to 50 by ttinterval do (
   PlotCanvasFreeze ();
+
+  # Uncomment this to just draw the latest short segment
+  #LinePlotClear();
   
   # Draw a piece of the trajectory starting at pointblue
   # and t going from tt to going tt+ttinterval