[Dreading]

Please forgive this question, but I am wading into cooking waters for the first time ever - I am a little confused about the manila options. I understand that I'm selecting the appearance, but I'm confused about why there are more options for landscape than portrait. If I select "Telus" then do I automatically have manila for landscape and portrait? Also, would this be compatible with Background4Allpages? I know there's been some conflicts with Juggalo's manila and Background4Allpages.