diff --git a/samples/matlab/cantera_demos.m b/samples/matlab/cantera_demos.m
index 749688a97..cae67fc62 100644
--- a/samples/matlab/cantera_demos.m
+++ b/samples/matlab/cantera_demos.m
@@ -1,3 +1,4 @@
+% Run all examples
 ctpath;
 cd ../demos/matlab;
 run_examples;
diff --git a/samples/matlab/periodic_cstr.m b/samples/matlab/periodic_cstr.m
index 323ad1c9a..24a6a8408 100644
--- a/samples/matlab/periodic_cstr.m
+++ b/samples/matlab/periodic_cstr.m
@@ -1,11 +1,10 @@
 function periodic_cstr
 %
-%  Periodic CSTR
+%  A CSTR with steady inputs but periodic interior state.
 %
-%  This example illustrates a CSTR with steady inputs but periodic
-%  interior state.  A stoichiometric hydrogen/oxygen mixture is
-%  introduced and reacts to produce water.  But since water has a
-%  large efficiency as a third body in the chain termination reaction
+%  A stoichiometric hydrogen/oxygen mixture is introduced and reacts to produce
+%  water. But since water has a large efficiency as a third body in the chain
+%  termination reaction
 %
 %         H + O2 + M = HO2 + M
 %
diff --git a/samples/matlab/rankine.m b/samples/matlab/rankine.m
index 0a76b64d3..590595800 100644
--- a/samples/matlab/rankine.m
+++ b/samples/matlab/rankine.m
@@ -1,9 +1,6 @@
 function [work, efficiency] = rankine(t1, p2, eta_pump, eta_turbine)
 %
-% RANKINE
-%
-% This example computes the efficiency of a simple vapor power
-% cycle.
+% This example computes the efficiency of a simple vapor power cycle.
 %
 help rankine