Write protecting text attachments When you attach a text fragment to a document definition it is by default editable in Ad Hoc Correspondence. If you want to write protect a text attachment, you must define it as read-only in Composition Center. To write protect a text attachment 1 Open the document definition. 2 In the Document definition view, in the Ad Hoc Correspondence resources area, click the text attachment. 3 On the Properties tab, General area, select Read-only. 4 Click Save.