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Mathics3 / Mathics3-development-guide Public

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note how to do parameter checking#49

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rocky wants to merge 1 commit intomasterMathics3/Mathics3-development-guide:masterfrom

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note how to do parameter checking#49
rocky wants to merge 1 commit intomasterfrom
add-section-on-parameter-checking

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note how to do parameter checking
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