TOPIC: "Stationary" creation

Running 3.6.6 I think.  I've seen mention of this ability to create custom stationary for report and title page layout.  I've seen the option in the HIP menus as well.  Is there somewhere I can get some guidance on exactly how to do this?  I have questions about how to go about this as far as layout, place holders etc.

Also using HIP mobile on Android.

Create an 8.5 x 11 page in Photoshop or Word. Then save it as a PDF and select it under Report Settings->Stationery.

Okay, I guess I'm still not getting the concept.  I understand creating pdf's out of docs, I do it all the time.  I there just one that fits all situations??  I'm not getting how this all works together. Once a pdf is created, one usually cannot alter it.  How does this work in HIP?
Is there somewhere that explains it like I were 5? LOL

Pretend you're making paper stationery with a nice watermark and a nice border. Then printing HIP using this paper for your clients. You're doing the same thing, just digitally. HIP is going to write your report on top of the digital stationery and give you the final product.

Okay, sort of what I though.  I'll play around with it.  Right now, my reports covers most of the space on the page. I'll need to remove any borders and colors and such and get an idea of how much room I need to leave clear on the stationary.

Could someone show a finished example ?