# Setting the Display Settings
In addition to enabling headlines, you can adjust their display settings and appearance.
{% hint style="info" %}
To exclude a headline or a headline in a container, use the `has-headline-exclude` class.
{% endhint %}
### Generate Missing IDs
Not all headlines have an `ID` attribute, commonly known as an anchor attribute. You can toggle this option to allow Highlight and Share to generate the IDs for you.
Since the plugin runs its content filter late, other plugins should have had a chance to add their own ID attributes to the headlines. This makes Highlight and Share compatible with many Table of Contents plugins out of the box.
Generate Missing IDs Option
However, if you want auto-generation and don't have a helper plugin, you can force the plugin to generate missing IDs.
{% hint style="info" %}
Use this in conjunction with the `has-headline-exclude` class to exclude headlines or headlines in wrappers.
{% endhint %}
### Link Icon Always Visible Option
You can make the link icon always visible on the frontend by toggling this option. By default, the link icon is only shown on headline focus or hover.
When visible, the link icons are more prominent.
Link Icons Shown by Default
### Excluding Headline Levels
You can exclude certain headline levels from being selected for sharing. You can select from all six heading levels.
Select Headline Levels Worth Sharing
### Enabling on Post Types
You can enable headlines on certain post types. By default, they are only enabled for posts.
Post Type Settings for Headline Sharing
You can auto-enable existing post types in this section.
Even if you have headline sharing disabled for a post type, you can still enable it individually by editing the post and enabling headline sharing in Highlight and Share's sidebar settings.
Sidebar Settings on a Post or Page When Editing
### Setting Exclusion Selectors
You can set CSS selectors to automatically exclude certain headlines. For now, this only works with CSS classes.
