Regions do not display in "Demonstrate block regions" I wonder why some regions of my theme don't display in section 'Demonstrate block rerions'.
This happens with some themes which I downloaded from Drupal.org, for example with the Software theme.
Here is part of its 'info' file (showing multiple regions):

And this is what 'Demonstrate block rerions' for this theme looks like:

My question: What could be causing this?
I use SEVEN as admin theme. On page admin/structure/block I see the link  &quot;Demonstrate block regions (Software Responsive Theme)&quot; and all regions that defined in .info file. But when I click this link, I see ONLY SOME OF IT BUT NOT ALL .
I try to change admin theme, but it is not help.
Maybe problem in this particular theme?
Try switching the administration theme you're using, to a theme shipped with Drupal core.
Or refer to the article &quot;Demonstrate block regions&quot; missing in Drupal 7 for some more hints about this. Here are some quotes from it:

On a fresh install, you should see &quot;Demonstrate block regions&quot; when you go to admin/structure/block.  If somebody has played around with the block settings on your Admin theme, this selection might disappear.
Make sure that “System help” is assigned to a region (probably ‘Help’) in your Admin theme (probably 'Seven’).  Go to 'configure’ for the 'System help’ block and make sure that the visibility settings are not restricted in some way.

Another possibilities you may want to try (haven't had a chance myself to try that, sorry):

inspired by Issue # 996214, which is about another theme though:

Verify if the &quot;System Help&quot; block is placed in the help region.


inspired by Issue # 1392206, which is about another theme though:

You might need to turn on the Help module in core modules.