Joseph Wright writes:

 > 2) How should the missing three (plus any others) be named.  The current
 > idea is, I think, something like:
 > 
 > \endlinechar	\l_char_endline_int
 > \evereof	\l_ior_eof_toks
 > \scantokens	\tlist_rescan:n
 > 
 > Is this logical: are there any other suggestions?

so for now (see other post) I would only assign \endlinechar and \scantokens
and the names there look fine to me

frank