Remove default text "Click here to enter text." from all content controls

Hi,

Whenever I add a content control inside Word 2010 document I see a default text "Click here to enter text.". I don't want my end users to see such text in the document. Is there a way to remove of disable this feature in Word 2010.

I am populating text into content controls in my document using OpenXml SDK. BUT wanted to know if there is a setting to disable this default text in content control. I can write code to remove this text through code but that's just a waste :(.  I have about 50 odd content controls in a document.

Regards,

Vijay