i know a trustworthy keyw ailing hit an ink picture and put that dispatch on the page, but how did it erase it when you pressed delete?
Answers: Just similar to black picture pushed the dispatch on, in attendance is white inked picture which puts a coat of white ink over the junk mail "erasing" it.
You've probably hear of "WiteOut" which is a substance that nation used to cover errors. A similar substance be applied to a portion of the ribbon of a typewriter and when the knob for the epistle to be erased be struck the memo be covered near the substance, effectively erasing it from the page.