EVA-x

[Mark Knowles]

Has anyone studied or thought much about the distribution of this symbol (EVA-x) throughout the manuscript? It seems to me anecdotally that when this character appears in one place on a page it is much more likely to appear somewhere else on the same page. There could be a variety of explanations for this:
1) If a word requiring this character appears once on a page then maybe the word or a related word also appears on the page.
2) Some pages seem to me to have a wider vocabulary than others and so are more likely to require this character.
3) Copying and modifying existing real words when producing filler words on a page will make this character more likely to be copied.
(Some might argue for language or dialect differences between pages and authors)

I doubt (1) as this character seems to appear in the context of different spellings.

It seems that what is true of this character is also true of other rare characters.