Which two statements are true about a new custom typelist? $($Choose two$)$

$($Choose al correct answers$)$

A new custom typelist cannot have a TTX file.

A custom typelist is displayed as a table in the application.

A custom typelist can contain a maximum of $255$ typecodes.

A typecode's code must be unique across all the typelists in the application.

A new custom typelist is defined in a TTI file.