[gimp-web/testing] Create subsections for the "Painting" section in the 2.9.4 news...

[Jehan Pagès <jehanp src gnome org>]

commit 55df387068f27beb134f78ae3468a377f01c1fc6
Author: Jehan <jehan girinstud io>
Date:   Wed Jul 13 02:05:09 2016 +0200

    Create subsections for the "Painting" section in the 2.9.4 news...
    
    ... and fix/elaborate using mousewheel to change tool options.

 .../news/2016-06-02 GIMP 2.9.4 Released/index.md   |   16 +++++++++++++++-
 1 files changed, 15 insertions(+), 1 deletions(-)
---
diff --git a/content/news/2016-06-02 GIMP 2.9.4 Released/index.md b/content/news/2016-06-02 GIMP 2.9.4 
Released/index.md
index cb72b06..9e972ef 100644
--- a/content/news/2016-06-02 GIMP 2.9.4 Released/index.md      
+++ b/content/news/2016-06-02 GIMP 2.9.4 Released/index.md      
@@ -81,10 +81,14 @@ While there are no immediate user-visible changes, this reorganizations greatly
 
 ## Painting
 
+### MyPaint brush tool
+
 The new MyPaint Brush tool is now enabled by default. Daniel Sabo and Michael Natterer improved its 
performance and made MyPaint brushes available via an aready familiar dockable dialog interface, with 
previews and tagging.
 
 Jehan Pagès collaborated with the MyPaint team: he ported libmypaint to autotools, allowing in particular 
standard builds on all platforms, and work is being done to turn default brushes into a separately shipped 
package.
 
+### Symmetry painting
+
 Another major new feature is symmetric painting mode, also developed by Jehan Pagès with financial support 
from the GIMP community. It can be activated through the new "Symmetry Painting" dock, and allows to use all 
paint tools with various symmetries (mirror, mandala, tiling…).
 
 * "Mirror" allows to paint with **horizontal, vertical (axial) and/or central symmetry**. The symmetry 
guides can be placed anywhere on canvas.
@@ -96,7 +100,17 @@ Quick 1-minute test by Aryeom Han:
     <img src="{filename}gimp-2-9-4-symmetry.png" alt="Symmetry painting" width='975' height='1440' />
 </figure>
 
-Additionally, it is now possible to assign a combination like **Shift + Mousewheel** for changing brush size.
+### Tool Options
+
+Better shortcut mappings have been attributed to the mouse wheel, associated with various modifiers, in 
order to do useful things on the current tools options:
+
+* `Alt + Mousewheel`: opacity increase/decrease;
+* `Shift + Primary + Mousewheel`: aspect increase/decrease;
+* `Shift + Alt + Mousewheel`: angle increase/decrease;
+* `Primary + Alt + Mousewheel`: size increase/decrease;
+* `Shift + Primary + Alt + Mousewheel`: spacing increase/decrease.
+
+_Note_: the `Primary` modifier is usually `Ctrl` or `Cmd`, depending on your platform.
 
 ## Selections