I have had a look at spellcheck.html.
Minor changes to the text to add references to keyboard shortcuts for both Windows and Mac.
Added two new small image files to show options on the spellcheck dialogue box rather than the text references.
Edited the stylesheet to enhance the look of the menuitem style.
Use whatever you think is suitable.
https://www.mobileread.com/forums/at...1&d=1614333712