1) The word "contributions" suggests "original contributions". Change to "topics" or "concepts".
2) "the former be implemented": insert "can"
3) 4.2 first sentence: insert comma after "standards"
4) 4.4 insert comma after "without space leaks"
Done.
5) 4.4 for "in favor of" read "instead of"
6) 4.4 for "reset/shift" read "reset and shift" (looks like a single operator)
7) (Non-editorial) Rather than overloading `equal?`, introduce new equivalence relations `continuation-prompt-tag=?`, `continuation-prompt-key=?`, and `thread-local=?`.
`equal?` is not really overloaded; here I just want to point out that a new prompt tag/thread local is created and that `equal?` is fine enough to detect "newness".
It's like saying that the results of two invocations of, say, `cons`, are not `eqv?`.
In particular, I want that `eq?`, `eqv?`, and `equal?`-bases hash tables can be used when the keys are continuation prompts or thread locals.
8) Italics: Article titles should be in double quotes, not italics. R6RS, R7RS , and SRFI nnn should not be in italics.
I use the <cite> element of HTML to mark R6RS, R7RS, etc., which seems to be semantically the correct choice by the definition of the <cite> element in the HTML standard. The browser's default CSS renders it in italics. I can add an extra rule in the CSS included in the SRFI document but I don't think it is that important.
9) Add a note that %call-with-current-continuation is the R4RS procedure call-with-current-continuation.
Done.
Thank you a lot for your careful and valuable reading.