minor docs changes

doc/source/children-projects.rst

@@ -0,0 +1,15 @@
+.. _children-projects:
+
+####################
+Children projects
+####################
+
+- `MOLA <https://github.com/MOLAorg/mola>`_: A Modular Optimization framework
+  for Localization and mApping (MOLA).
+
+- `MVSIM <https://github.com/MRPT/mvsim>`_: Lightweight, realistic dynamical
+  simulator for 2D ("2.5D") vehicles and robots. It is tailored to analysis
+  of vehicle dynamics, wheel-ground contact forces, and accurate simulation
+  of typical robot sensors (e.g. laser scanners).
+
+- ROS packages: See the full list of repositories in: https://github.com/mrpt-ros-pkg

doc/source/doxygen-docs/tutorial-3D-scenes.md

@@ -28,7 +28,7 @@ Viewports are referenced by their names, case-sensitive strings. Each viewport c
 The main rendering method, COpenGLScene::render(), assumes that a viewport has been set-up for the entire target window. That method will internally make the required calls to opengl for creating the additional viewports. Note that only the depth buffer is cleared by default for each (non-main) viewport, to allow transparencies. This can be disabled by the approppriate member in COpenGLViewport.
 
 Users will never normally need to invoke COpenGLScene::render() manually, but use instead:
-- the 3D standalone viewer: [SceneViewer3D](app_SceneViewer3D.html)
+- the 3D standalone viewer: \ref app_SceneViewer3D
 - the basic runtime 3D display windows mrpt::gui::CDisplayWindow3D
 - the advanced GUI-controls capable display  mrpt::gui::CDisplayWindowGUI
 - wxWidgets / Qt controls also exist for integration into custom GUIs (see mrpt::gui:: mrpt::gui::CGlCanvasBase)

doc/source/index.rst

@@ -22,6 +22,7 @@ MRPT
   applications
   examples
   supported-sensors
+  children-projects
 
 .. toctree::
   :maxdepth: 2