That would be parsed as a single operator and evaluated using the following rule:
> Evaluates to the operation defined for the operator in the environment. If none, evaluates to a constant function that pushes the operator, followed by all input terms, onto the output program.
That would be parsed as a single operator and evaluated using the following rule:
> Evaluates to the operation defined for the operator in the environment. If none, evaluates to a constant function that pushes the operator, followed by all input terms, onto the output program.
I believe it would simply output itself.