New answers tagged error-trapping
5
I Trace-ed the Information[ f ] command both before and after an invocation of f (with a simpler definition f[x_] := Legended["123", x]). By comparing the results, I found a function System`Dump`makeusageboxes:
which reduces to another function BoxForm`MakeBoxesWithTextFormatting:
Attributes[BoxForm`MakeBoxesWithTextFormatting] = {HoldAllComplete}
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