Single Leg Gallows

[ReneZ]

With respect to the rule that p and f are predominantly found on top lines of paragraphs, or more generally, when there is space available above (that also includes circular writing and labels)....:

For me, the most interesting thing about this is that it is not so much a rule, but that it is 'just' a very strong trend. There are too many exceptions.

This is also true for other (similar) types of rules, for example related to m or g .

I do agree with this, about p and f:

They cannot be separate letters in some language alphabet. 

However, in the 1970's Currier already demonstrated that p and f are not alternatives for t and k, and more recently, Lisa did some more stats from which she concluded that the following would explain a lot:

f is an alternative form for te  and p is an alternative form for ke.
(There is no typo here).

Over the years, I have developed an opinion, which would explain a lot of the unusual things we are seeing. This is that the text has been encoded somehow, with rules that allow for some flexibility or some choice by the encoder.

It would explain the lack of repeating sequences of words, and it could explain the differences between the various Currier or RZ languages. Furthermore, Lisa's equivalence above is one good example of it.
This could even explain the very strange behaviour of the text that Patrick Feaster has introduced here, and during his 2022 conference talk.