Disabling the HTML view button

In the HTML editor a user can view the HTML code by clicking Zoom and the HTML button at the bottom of the editor.

This HTML button can be disabled (in version 5.1.0.5) by setting security permissions on the item /sitecore/system/Settings/Html Editor Profiles/<profile>/Buttons/Html View.

If the user does not have read access to this item, the button does not appear.