You can sign E-Forms, Virtual E-Forms, and HTML documents in the same way you would sign an image or text document in the OnBase Client.
Signing an E-Forms, Virtual E-Forms, or HTML document makes it read-only. Changes can no longer be made once it is signed. This includes the disabling of any button or field that could be used to update the form. Text box fields are made read-only instead of being disabled. All Submit buttons will still be active after signing.