--- a/doc/interpreter/dynamic.txi
+++ b/doc/interpreter/dynamic.txi
@@ -1,3 +1,15 @@
+@c Copyright (C) 2007 John W. Eaton, David Bateman
+@c This is part of the Octave manual.
+@c For copying conditions, see the file gpl.texi.
+
+@macro examplefile{file}
+@example
+@group
+@verbatiminclude @value{top_srcdir}/examples/\file\
+@end group
+@end example
+@end macro
+
 @node Dynamically Linked Functions
 @appendix Dynamically Linked Functions
 @cindex dynamic-linking
@@ -79,11 +91,7 @@
 
 Consider the short example
 
-@example
-@group
-@verbatiminclude @value{top_srcdir}/examples/helloworld.cc
-@end group
-@end example
+@examplefile{helloworld.cc}
 
 This example although short introduces the basics of writing a C++
 function that can be dynamically linked to Octave.  The easiest way to
@@ -265,11 +273,7 @@
 The typical way to extract a matrix or array from the input arguments of
 @code{DEFUN_DLD} function is as follows
 
-@example
-@group
-@verbatiminclude @value{top_srcdir}/examples/addtwomatrices.cc
-@end group
-@end example
+@examplefile{addtwomatrices.cc}
 
 To avoid segmentation faults causing Octave to abort, this function
 explicitly checks that there are sufficient arguments available before
@@ -328,11 +332,7 @@
 In Octave a character string is just a special @code{Array} class.
 Consider the example 
 
-@example
-@group
-@verbatiminclude @value{top_srcdir}/examples/stringdemo.cc
-@end group
-@end example
+@examplefile{stringdemo.cc}
 
 An example of the of the use of this function is
 
@@ -391,11 +391,7 @@
 array can then be treated just like any other @code{octave_value}.  A simple
 example is
 
-@example
-@group
-@verbatiminclude @value{top_srcdir}/examples/celldemo.cc
-@end group
-@end example
+@examplefile{celldemo.cc}
 
 Note that cell arrays are used less often in standard oct-files and so
 the @file{Cell.h} header file must be explicitly included.  The rest of this
@@ -425,11 +421,7 @@
 
 A simple example demonstrating the use of structures within oct-files is
 
-@example
-@group
-@verbatiminclude @value{top_srcdir}/examples/structdemo.cc
-@end group
-@end example
+@examplefile{structdemo.cc}
 
 An example of its use is
 
@@ -805,11 +797,7 @@
 that no global variable of the desired name is found.  An example of the
 use of these two functions is
 
-@example
-@group
-@verbatiminclude @value{top_srcdir}/examples/globaldemo.cc
-@end group
-@end example
+@examplefile{globaldemo.cc}
 
 An example of its use is
 
@@ -848,11 +836,7 @@
 The example below demonstrates an example that accepts all four means of
 passing a function to an oct-file.
 
-@example
-@group
-@verbatiminclude @value{top_srcdir}/examples/funcdemo.cc
-@end group
-@end example
+@examplefile{funcdemo.cc}
 
 The first argument to this demonstration is the user supplied function
 and the following arguments are all passed to the user function.
@@ -947,20 +931,12 @@
 An example of the inclusion of a Fortran function in an oct-file is
 given in the following example, where the C++ wrapper is
 
-@example
-@group
-@verbatiminclude @value{top_srcdir}/examples/fortdemo.cc
-@end group
-@end example
+@examplefile{fortdemo.cc}
 
 @noindent
 and the fortran function is
 
-@example
-@group
-@verbatiminclude @value{top_srcdir}/examples/fortsub.f
-@end group
-@end example
+@examplefile{fortsub.f}
 
 This example demonstrates most of the features needed to link to an
 external Fortran function, including passing arrays and strings, as well
@@ -1054,11 +1030,7 @@
 to allow variables, etc to be restored even if an exception occurs.  An
 example of the use of this mechanism is
 
-@example
-@group
-@verbatiminclude @value{top_srcdir}/examples/unwinddemo.cc
-@end group
-@end example
+@examplefile{unwinddemo.cc}
 
 As can be seen in the example
 
@@ -1129,11 +1101,7 @@
 
 Consider the short example
 
-@example
-@group
-@verbatiminclude @value{top_srcdir}/examples/firstmexdemo.c
-@end group
-@end example
+@examplefile{firstmexdemo.c}
 
 This simple example demonstrates the basics of writing a mex-file.