Drupal 8.x

I would like to use full HTML in the fields help text (displayed to users that input new content) on content type input forms.

How can I achieve that?

I'm looking at documentation that says it is incomplete.
https://www.drupal.org/docs/8/themes/barrio-bootstrap-4-drupal-8-theme/i...

• The only option for installing is
  Download Barrio: $ composer require drupal/bootstrap_barrio

Why can't I use the web-based installer located at /admin/theme/install?

Or can I and that option needs added to the documentation?

I'm trying to set the temp path to under settings.php. However it doesn't seem to play nice.

$settings["file_temp_path"] = "C:\tmp"

I am having a view with Embedded filter configuration. One of the filter is 'Availability' that has options 'Yes' and 'No'. This filter is a checkbox type filter field. When I select 'Yes' the records are filtered correctly.Similarly When I select 'No' alone, he records are filtered correctly. However when I select both 'Yes' and 'No' I a not seeing any results. Not sure what I am missing. Attaching the screenshot of my view filter setting. Any help?!

I'm trying out Nginx, Postgresql, for a new green-field Drupal 8.8 app on an ubuntu 18.04 server. It's working, except the theme is not loading. Just the html and images. This is setup using the new composer paradigm where config, vendor files are in a higher level than the Drupal app inside a "web" subdirectory. Watching the Network tab of developer tools, I see that the site is loading css from sites/default/files/css/*. In Resources tab, I do see that core/themes/bartik, etc are loaded. I've switched from Bartik to Claro to see if there is a difference but no difference.

I'm currently working on a D8 site. I need to build an interactive tool that will contain a few clickable regions. When a user clicks a region, they'll be presented with a modal with a few options. After selecting an option their selection will be represented in that region and the following regions will update based on the previous selection.