Source:
MSX Resource Center forums
I totally overlooked
this forum thread this afternoon, in which Nyyrikki announced the manual of Super-X was translated to English by JP Grobler.
As you can see in
this thread, Super-X is a feature-rich debugger which contains a kanji reader, monitor, assembler, disassember, character editor, calculator, ASCII editor, HEX editor, sector editor, file editor and more all in one package. More information can be found on
Nyyrikki's website
Relevant link:
Nyyrikki's website 
