■ The printer starts macro definition during normal operation and finishes it during macro definition upon receiving this
command.
■ The printer performs printing during macro definition.
■ The macro is executed by GS ^.
■ The maximum number of macro data to be defined varies with respect to printer models. The data exceeding this limit
is not stored.
■ ESC @ does not clear the existing defined macro. The macro remains effective until the printer reset and power
cycling are executed.