[gnome-devel-docs] HIG: add details on parent/child primary windows

[Allan Day <allanday src gnome org>]

commit 36326756224fad5e3527e1234aaecd644c434055
Author: Allan Day <allanpday gmail com>
Date:   Fri Jul 17 17:51:40 2015 +0100

    HIG: add details on parent/child primary windows
    
    https://bugzilla.gnome.org/show_bug.cgi?id=737594

 hig/C/primary-windows.page |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)
---
diff --git a/hig/C/primary-windows.page b/hig/C/primary-windows.page
index 883e2d0..0fd18c5 100644
--- a/hig/C/primary-windows.page
+++ b/hig/C/primary-windows.page
@@ -49,6 +49,19 @@
 <item><p>Organizing sets of content into different windows (if using tabs).</p></item>
 </list>
 
+<section id="parent-child-primary-windows">
+<title>Parent/child primary windows</title>
+
+<p>Multiple instance applications typically have identical primary windows (in the case multiple web browser 
windows, for example). However, this is not always the case.</p>
+
+<p>Primary windows can have a parent/child relationship. In this type of application, there is only ever one 
parent window. This typically contains an overview of content items which can be opened in the parent window, 
or in a separate child window. This allows multiple content items to be simultaneously open.</p>
+
+<p>While child windows can only be opened through a parent window, they are not dependent on them in order 
to stay open: closing the parent window does not result in the closure of the application's child windows.</p>
+
+<p>GNOME's <app>Notes</app> application is a good example of parent/child primary windows.</p>
+
+</section>
+
 </section>
 </section>