suggestion: supply diff too, makes one see the differences way better
moving navi keys [up-down] changes available chars (..,D,E<-F->G,H,.. ),moving [left-right] position (F->I->L->..), [set] ok, [?] cancel
Question: Are you planning to change the filesize automatically according to the size of the file?Ex: If the file is greater than 1024kb the file browser shows 1mb.
...Regarding the rename feature:It would be great if you could work on it, as PhyrePhox says, many people has asked for this. The only drawback is that if the filename is changed, Canon's firmware won't be able to recognize it and display the picture, etc....I like it because it is simple but this way you can only rename the files one-at-the-time. I think people soon will ask you for a batch solution....