The file you have selected has not been created in this program. You have the following options:
1. Embedd file content into new document
Create a new empty document and embedd the content of the file. This option allows you to make minor modifications to your text and to insert elemente above or below.
2. Direct Import
Import the file without any doing any modification. You will not be able to edit your document before sending. If you need to make changes to the document, please do so in the program that you used to create the file and then import again.