• The actuality on QWERTY history : raycy - Darryl Rehr's revise"The total frequencies of adjacent typebar pair's bi-grams on whole a type-basket are aimed to be minimum or small.（1997）"
• The actuality on QWERTY history - About "Rehr's revision" : that is "Sholes needed to do was separate the letter pairs by at least one type bar.（1997）" "(almost just) Only ADJACENT TYPEBARs are the matter"

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