The Modify a Page#Workflow section has some minor problems: don't say "hit", it's not a summary box, the button is "Show preview", rephrase "double-enter".
I fixed the section, it's in User:Skierpage/Improved_Modify_a_page. Can someone with write access please update this? Thanks.
I had forgotten that we protected some "instruction" pages. Mostly I agree with you. It is indeed a Summary field, not a box, however, that's a technical distinction, not really a general user one, so I haven't changed that. Similarly, you'll see that I've marked buttons as menuchoices - again they are not strictly so, but we have agreed with the translators and docbook producers that we should so mark anything that denotes a choice made by the user. If you see other buttons not marked so please feel free to add the markup. Let me know if you come across protected pages that need such attention. Thanks.