The simplicity of the paper airplane has made it a popular toy for generations of kids (and adults), even in this age of high-tech entertainment. But while the shade structure installed recently in Los Angeles' Grand Park was designed to resemble a fleet of paper airplanes, creating an enlarged version of a childhood plaything was hardly simple, according to Greg Naiman, president of Canvas Specialty Inc., the Los Angeles, Calif., company that designed, engineered and built it.
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