Answer architecture round 2: refuse by default where a builtin's operand can be a reference, test the flag against each operand grammar, drop a duplicate test, rename allNeverNumeric, rewrap Computation, and order item 91 after item 4
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@@ -684,8 +684,8 @@ hyphenated field or name can't be an operand.
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{ "format": "{net} x {qty} = {calc(net * qty, 2)}", "net": ["19.99", "5.00"], "qty": ["3", "7"] }
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```
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Renders e.g. `19.99 x 3 = 59.97`. A name is the operand `{lat}` prints, so the calc computes
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from the pick shown:
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Renders e.g. `19.99 x 3 = 59.97`. A name is the operand `{lat}` prints, so the calc
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computes from the pick shown:
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```json
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"{/misc.coordinate.lat as lat}{lat}° is {calc(lat * 60, 0)} arcminutes"
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@@ -693,9 +693,9 @@ from the pick shown:
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Renders e.g. `5.338477° is 320 arcminutes`.
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A result that rounds to zero prints unsigned — `0`, `0.00` — as `{float()}`'s does. An operand that can never be a number (`"abc"`,
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or a choice of such) is rejected at load, as is a division by a constant zero
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(`1/0`, or a fixed `"0"` field); an operand that sometimes is not a number yields
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A result that rounds to zero prints unsigned — `0`, `0.00` — as `{float()}`'s does. An
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operand that can never be a number (`"abc"`, or a choice of such) is rejected at load, as
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is a division by a constant zero (`1/0`, or a fixed `"0"` field); an operand that sometimes is not a number yields
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`NaN`, and a division by one that is not constant `Inf` — both print rather than
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fail, except in a [typed column](#datatype), which must prove neither happens.
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