# Configuring Text Formats and Editors

## Goal

Add a horizontal rule tag to the _Basic HTML_ text format, and a corresponding
button to its editor configuration.
## Prerequisite knowledge

[Concept: Text Formats and Editors](/link/734)
## Site prerequisites

* The core Filter, Editor, and CKEditor modules must be installed. They are
installed on your site when you install with the core Standard installation
profile.
* The _Basic HTML_ text format must exist. This is created on your site when you
install with the core Standard installation profile.
## Steps

1. In the _Manage_ administrative menu, navigate to _Configuration_ > _Content
    authoring_ > _Text formats and editors_ (_admin/config/content/formats_). The
    _Text formats and editors_ page appears. Note that the names of the text formats
    that came with your installation profile are shown in English on this page; see
    [Concept: User Interface, Configuration, and Content translation](/link/695) for an explanation.
1. Click _Configure_ for the _Basic HTML_ text format. The _Basic HTML_ page
    appears.
1. Note that _CKEditor_ is selected in the _Text editor_ field. This allows you
    to configure the editor's toolbar.
1. Drag the _horizontal line_ button from _Available buttons_ to the
    _Active toolbar_. Toolbar items can be visually grouped together using a
    vertical divider.  As an alternative to dragging, you can tab to select
    buttons and then move them using keyboard arrow keys.
    <img src="https://docs.cocobook.com/uploads/images/gallery/2026-10/structure-text-format-config-editor-config.png" alt="Configuring the editor" width="100%" />
1. Note that you can change the _Filter processing order_.
1. Under _Filter settings_ > _Limit allowed HTML tags and correct faulty HTML_,
    in the field _Allowed HTML tags_, verify that `&lt;hr&gt;` is present (adding its
    editor button will automatically update the allowed tags).
    <img src="https://docs.cocobook.com/uploads/images/gallery/2026-10/structure-text-format-config-allowed-html.png" alt="Configuring the HTML tags" width="100%" />
1. Click _Save configuration_. You will be taken back to the _Text formats and
    editors_ page. A message will be displayed saying that the text format has been
    updated.
    ![Confirmation message for text format configuration](https://docs.cocobook.com/uploads/images/gallery/2026-10/structure-text-format-config-summary.png)

## Expand your understanding

If you do not see the effect of these changes in your site, you might need
to clear the cache. See [Clearing the Cache](/link/773).
## Videos

[Configuring Text Formats and Editors](https://www.youtube.com/watch?v=T9RD6PTxe9U)