iOS <-> Windows Editor Formatting & Ruler

I’ve been using Scrivener for quite some time now and I’m very please with it, overall. I’ve been having one point of difficulty lately, when it comes to document formatting and the ruler.

1.) When I create a document in iOS and view it on Windows, the ruler is full of tab stops, as pictured here:

How do I go about changing the formatting for existing documents and new documents created in the iOS version to prevent these tab stop things from showing up? I don’t know how to even go about finding out what the right shortcut would be to delete these pesky little L shaped things. :frowning:

2.) What are the dimensions of the Paperback formatting in the iOS options, so that I can set all my documents to the same margin dimensions?