ErrorMode

Skip the \u001b that kicks off the unknown Ansi escape but leave subsequent characters in place, so the end-user can see that an Ansi escape was entered e.g. via the [A[B[A[C that appears in the result

Find the end of the unknown Ansi escape and skip over it's characters entirely, so no trace of them appear in the parsed fansi.Str.

Throw an exception and abort the parse

The names of the product elements

The name of the type