diff --git a/interfaces/matlab/+ct/+oneD/Boundary.m b/interfaces/matlab/+ct/+oneD/Boundary.m
index 4bd0849df..c473100da 100644
--- a/interfaces/matlab/+ct/+oneD/Boundary.m
+++ b/interfaces/matlab/+ct/+oneD/Boundary.m
@@ -1,7 +1,8 @@
 classdef (Abstract) Boundary < ct.oneD.Domain
-    % Create a Boundary domain. ::
+    % Boundary Class.
     %
-    %     >> m = ct.oneD.Boundary(type, phase, name)
+    % Base class for objects representing domain boundaries. The constructor is called
+    % by derived classes and cannot be used directly.
     %
     % :param type:
     %    String type of Boundary. Possible values are:
diff --git a/interfaces/matlab/+ct/+oneD/Domain.m b/interfaces/matlab/+ct/+oneD/Domain.m
index 7075c7456..dcde99e35 100644
--- a/interfaces/matlab/+ct/+oneD/Domain.m
+++ b/interfaces/matlab/+ct/+oneD/Domain.m
@@ -1,7 +1,8 @@
 classdef (Abstract) Domain < handle
-    % Domain Class ::
+    % Domain Class.
     %
-    %     >> d = ct.oneD.Domain(type, phase, id)
+    % Base class for objects representing boundaries and flow domains. The constructor
+    % is called by derived classes and cannot be used directly.
     %
     % :param type:
     %    String type of domain. Possible values are:
diff --git a/interfaces/matlab/+ct/+oneD/Flow.m b/interfaces/matlab/+ct/+oneD/Flow.m
index f58d723f5..c0ed584ee 100644
--- a/interfaces/matlab/+ct/+oneD/Flow.m
+++ b/interfaces/matlab/+ct/+oneD/Flow.m
@@ -1,7 +1,8 @@
 classdef (Abstract) Flow < ct.oneD.Domain
-    % Create a Flow domain. ::
+    % Flow Class.
     %
-    %     >> m = ct.oneD.Flow(type, phase, name)
+    % Base class for objects representing flow domains. The constructor is called
+    % by derived classes and cannot be used directly.
     %
     % :param type:
     %    String type of domain. Possible values are:
diff --git a/interfaces/matlab/+ct/+zeroD/Connector.m b/interfaces/matlab/+ct/+zeroD/Connector.m
index 402c9589d..4cbcc7fda 100644
--- a/interfaces/matlab/+ct/+zeroD/Connector.m
+++ b/interfaces/matlab/+ct/+zeroD/Connector.m
@@ -1,9 +1,8 @@
 classdef (Abstract) Connector < handle
-    % Connector Class ::
+    % Connector Class.
     %
-    %     >> c = ct.zeroD.Connector(typ, r1, r2, name)
-    %
-    % Base class for walls and flow devices.
+    % Base class for walls and flow devices. The constructor is called
+    % by derived classes and cannot be used directly.
     %
     % See also: :mat:class:`ct.zeroD.FlowDevice`, :mat:class:`ct.zeroD.Wall`
     %
diff --git a/interfaces/matlab/+ct/+zeroD/FlowDevice.m b/interfaces/matlab/+ct/+zeroD/FlowDevice.m
index e6f123de3..a49e65118 100644
--- a/interfaces/matlab/+ct/+zeroD/FlowDevice.m
+++ b/interfaces/matlab/+ct/+zeroD/FlowDevice.m
@@ -1,9 +1,9 @@
 classdef (Abstract) FlowDevice < ct.zeroD.Connector
-    % FlowDevice Class ::
+    % FlowDevice Class.
     %
-    %     >> x = ct.zeroD.FlowDevice(typ, name)
+    % Base class for devices that allow flow between reactors. The constructor is called
+    % by derived classes and cannot be used directly.
     %
-    % Base class for devices that allow flow between reactors.
     % :mat:class:`ct.zeroD.FlowDevice` objects are assumed to be adiabatic,
     % non-reactive, and have negligible internal volume, so that they are
     % internally always in steady-state even if the upstream and downstream
diff --git a/interfaces/matlab/+ct/+zeroD/ReactorBase.m b/interfaces/matlab/+ct/+zeroD/ReactorBase.m
index d268da320..d6788863c 100644
--- a/interfaces/matlab/+ct/+zeroD/ReactorBase.m
+++ b/interfaces/matlab/+ct/+zeroD/ReactorBase.m
@@ -1,4 +1,8 @@
 classdef (Abstract) ReactorBase < handle
+    % ReactorBase Class.
+    %
+    % Base class for objects representing reactors. The constructor is called
+    % by derived classes and cannot be used directly.
 
     properties (SetAccess = immutable)
 
diff --git a/interfaces/matlab/Base/+ct/Kinetics.m b/interfaces/matlab/Base/+ct/Kinetics.m
index 1536621ec..306522883 100644
--- a/interfaces/matlab/Base/+ct/Kinetics.m
+++ b/interfaces/matlab/Base/+ct/Kinetics.m
@@ -1,11 +1,9 @@
 classdef (Abstract) Kinetics < handle
-    % Kinetics Class ::
+    % Kinetics Class.
     %
-    %     >> k = ct.Kinetics(id)
-    %
-    % Retrieve instance of class :mat:class:`ct.Kinetics` associated with a
+    % Instance of class :mat:class:`ct.Kinetics` associated with a
     % :mat:class:`ct.Solution` object. The constructor is called whenever a new
-    % :mat:class:`ct.Solution` is instantiated and should not be used directly.
+    % :mat:class:`ct.Solution` is instantiated and cannot be used directly.
     %
     % Class :mat:class:`ct.Kinetics` represents kinetics managers, which manage
     % reaction mechanisms. The reaction mechanism attributes are specified in a
diff --git a/interfaces/matlab/Base/+ct/ThermoPhase.m b/interfaces/matlab/Base/+ct/ThermoPhase.m
index 9710b2730..c8581ecc9 100644
--- a/interfaces/matlab/Base/+ct/ThermoPhase.m
+++ b/interfaces/matlab/Base/+ct/ThermoPhase.m
@@ -1,11 +1,9 @@
 classdef (Abstract) ThermoPhase < handle
-    % ThermoPhase Class ::
+    % ThermoPhase Class.
     %
-    %     >> t = ct.ThermoPhase(id)
-    %
-    % Retrieve instance of class :mat:class:`ct.ThermoPhase` associated with a
+    % Instance of class :mat:class:`ct.ThermoPhase` associated with a
     % :mat:class:`ct.Solution` object. The constructor is called whenever a new
-    % :mat:class:`ct.Solution` is instantiated and should not be used directly.
+    % :mat:class:`ct.Solution` is instantiated and cannot be used directly.
     %
     % :param id:
     %     Integer ID of the solution holding the :mat:class:`ct.ThermoPhase` object.
diff --git a/interfaces/matlab/Base/+ct/Transport.m b/interfaces/matlab/Base/+ct/Transport.m
index 8e982d12f..bf549c939 100644
--- a/interfaces/matlab/Base/+ct/Transport.m
+++ b/interfaces/matlab/Base/+ct/Transport.m
@@ -1,11 +1,9 @@
 classdef (Abstract) Transport < handle
-    % Transport Class ::
+    % Transport Class.
     %
-    %     >> tr = ct.Transport(id)
-    %
-    % Retrieve instance of class :mat:class:`ct.Transport` associated with a
+    % Instance of class :mat:class:`ct.Transport` associated with a
     % :mat:class:`ct.Solution` object. The constructor is called whenever a new
-    % :mat:class:`ct.Solution` is instantiated and should not be used directly.
+    % :mat:class:`ct.Solution` is instantiated and cannot be used directly.
     %
     % :param id:
     %     Integer ID of the solution holding the :mat:class:`ct.Transport` object.