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I've added a custom textarea for the create/edit post admin page. I did so using the add_meta_box() function. The problem is that the add_meta_box() callback function (which saves the data input into the textarea) calls the update_post_meta(). update_post_meta() then adds a custom field within the custom field section. So you essential end up with two textareas for the same field! The one you've created and the auto generated one!

Is there a way to remove the auto generated custom field?

Thanks, Jon

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If the meta field starts with an underscore, it will be hidden in the interface by adding the class hidden to the <tr> element. You could also apply this class by yourself using Javascript, the <tr> element has an id of meta-{$custom_field_id}.

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    Hi Jan. Thanks for the reply. Prefixing the name with and underscore hides the auto generated custom field AND the manually added meta box! So that's no good really. – Jon Sep 3 '10 at 11:55

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