Years ago I had to learn CAD on the job, because I was in the last generation of Industrial Design students to be trained in manual drafting only. Us poor saps were trained to letter by hand. For those of you designers with more modern educations that never had to do this, here's your belated lesson:
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Yes, I know the video is called "How to Hand Letter Like an Architect." We ID'ers always get the short end of the publicity stick.