simple-type-error, simple-condition, type-error, error, serious-condition, condition, t
Conditions of type simple-type-error are like conditions of type type-error, except that they provide an alternate mechanism for specifying how the condition is to be reported; see the type simple-condition.
simple-condition-format-control; simple-condition-format-arguments,
simple-condition-format-arguments, ‘type-error-datum; type-error-expected-type’, type-error-expected-type