Dave77 said:
how do i auto arrange in notebook or word pad
That's a feature found only in word processors like Word. The closest
you can come is to open two or more instances of Notepad or WordPad
with the two or more documents you want to compare, then manually drag
and resize their windows one under or next to the other. You can
click to switch between windows and do normal editing, saving,
printing, cut&paste, etc. in one or the other but that's it.