How can you ensure content authors do not modify certain components in the Experience Editor?

Disabling the editable field in the component's definition item directly prevents content authors from modifying those components in the Experience Editor. When the editable field is disabled, the content associated with that component becomes non-editable, ensuring that authors can view the component but cannot make any changes to it. This is a practical approach for maintaining the integrity of specific components that should not be altered, such as structural elements or components that contain essential functions.

Other options do not effectively achieve this goal. Restricting access levels can lead to broader limitations that may affect the author's ability to access other necessary content areas. Adding a note does not impose any actual restrictions on the component itself; it merely serves as a reminder or guideline. Hiding the component from the content tree may remove its visibility, but this does not prevent modification if an author were to somehow access it through other means. Therefore, disabling the editable field is the most reliable and direct method to maintain control over certain components within the Experience Editor.