I like diagrams that look like they are hand drawn so they look rustic and have character. However, these diagrams are precise and have lines that are parallel/perpendicular with accurate angles. In other words, they "look" like they are casually hand-drawn, but they actually take a lot of time and effort. I think it is an art form in itself. It is so much easier to use a computer program which will draw a perfect square for you. Not so easy to hand draw a perfect square. Diana
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