Primitive specification: accepted arity 2; argument roles {"name", "name"}; result role scalar.
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The head is inert: it records mathematical meaning for compilation, matching, replay, and display, but does not evaluate the represented operation.
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Compiler and runtime legality checks use the same primitive specification. Wrong arity or a known role contradiction is rejected.
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This head is normally produced by the engine when a parameter remains unresolved; rule authors declare parameters in YAML instead of writing this head in Match or Result.
Construct the inert mathematical object.
TransformParameter
[family,name]
TransformParameter[family,name]
Use the primitive in a formula, condition, or context.