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5

It's for the similar reasons the US still uses inches and feet instead of meters. The US has so much inertia invested in letter page size, switching to something very slightly different has a very poor cost benefit tradeoff. Additionally, being defined in a metric scale, it would be obnoxious to deal with on an imperial basis. So, no, there are no other ...


3

I've always been a fan of this approach. It's easy for the user to see that one decreases, the other increases. They also aren't tasked with choosing from a large variety of font sizes or fiddling with getting a slider exactly where they want it. This is essentially option 3 but with iconography that directly relates to what the user can expect upon taking ...


1

The 150 rule states that the ideal distance for reading text is 150 X the height of the font. So the source content will matter. If the source is not known, I would take best practices for power point font size and use a comfortable tablet viewing distance and base my content window size on this. Ideally the computer video card producing the content ...



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