Visual Editor (TinyMCE) (category)
| image_send_to_editor | Allows you to change the HTML of an image inserted into the editor using the “Add Media” button. Works in the Classic Editor. |
| mce_css | Allows arbitrary CSS styles (a CSS file) to be added to the WordPress TinyMCE visual editor. |
| quicktags_settings | Allows you to configure the WordPress text editor — Quicktags. |
| the_editor | Changes the HTML markup of the WordPress editor (the HTML to which TinyMCE and Quicktags are then attached). |
| the_editor_content | Sets preliminary content/text for the WordPress editor — the default text. |
| wp_default_editor | Determines which editor (which tab) should be displayed by default: TinyMCE or HTML. |