For adding extra information to the exported file you may either make use of the CommandItemTemplate as mentioned in the following help article. Exporting tips and tricks
Or else you can set the title for the PDF document as shown below.
ASPX:
<ExportSettings>
<Pdf Title="PDf Title"PageHeight="500px"/>
</ExportSettings>
Go through the following forum link which explains how to set the width of column while exporting. Export PDF Column Width
Thank you for your reply and help. It helped me w/ 2 of the 3 questions and I really appreciate it but the articles does not tell me how to set it to landscape.