Adobe Acrobat 7 Professional - Manual (Page 212)

Changing digital signature field properties
When you create a digital signature form field, you can specify an action to be executed
when the form field is signed. (See
Signing Adobe PDF documents .)
To change digital signature field properties:
1. In the Digital Signature Field Properties dialog box, click the Signed tab, and then do one
of the following:
●
Select Nothing Happens When Signed. This is the default.
●
Select Mark As Read-Only to lock the named field when the form field is signed. If you
choose Just These Fields or All Fields Except These, click Pick. In the Field Selection
dialog box, select one or several fields, and then click OK.
●
Select This Script Executes When Field Is Signed to execute the JavaScript in the dialog
box. Click Edit to edit an existing JavaScript or to create a new JavaScript action.
2. Click Close.