I'd like to change Frame's default behaviour when I

File > New > Document > Portrait

Now the document it produces does not have smart spaces turned on and I would like to change that.

In Frame help, it says

Change templates for blank paper and text files

My system has choices Portrait, Landscape and Custom. None is called "blank paper" or "text". So, what do I choose?

The online help also says

Note:  You can change the filename that FrameMaker looks for when it creates a blank paper document or opens a text file.

It does not say where to do that.

Thanks for any clarity you can create.