Merge pull request #3972 from PhilLab:docLineno

doc/tutorials/introduction/display_image/display_image.markdown

@@ -16,7 +16,7 @@ Source Code
 Download the source code from
 [here](https://github.com/Itseez/opencv/tree/master/samples/cpp/tutorial_code/introduction/display_image/display_image.cpp).
 
-@includelineno cpp/tutorial_code/introduction/display_image/display_image.cpp
+@include cpp/tutorial_code/introduction/display_image/display_image.cpp
 
 Explanation
 -----------

doc/tutorials/introduction/documenting_opencv/documentation_tutorial.markdown

@@ -415,7 +415,8 @@ you can manually specify it in curly braces:
 
 To include whole example file into documentation, _include_ and _includelineno_ commands are used.
 The file is searched in common samples locations, so you can specify just its name or short part of
-the path. The _includelineno_ version also shows line numbers.
+the path. The _includelineno_ version also shows line numbers but prevents copy-pasting since
+the line numbers are included.
 
 @verbatim
 @include samples/cpp/test.cpp

doc/tutorials/introduction/windows_visual_studio_Opencv/windows_visual_studio_Opencv.markdown

@@ -193,7 +193,7 @@ Now to try this out download our little test [source code
 or get it from the sample code folder of the OpenCV sources. Add this to your project and build it.
 Here's its content:
 
-@includelineno cpp/tutorial_code/introduction/windows_visual_studio_Opencv/introduction_windows_vs.cpp
+@include cpp/tutorial_code/introduction/windows_visual_studio_Opencv/introduction_windows_vs.cpp
 
 You can start a Visual Studio build from two places. Either inside from the *IDE* (keyboard
 combination: Control-F5) or by navigating to your build directory and start the application with a