This shows that the basic grammar file is created with a list of grammar items
providing station locations.
For practical applications we need to extend this grammar to include the range of
possible usage utterances that users will respond with to the prompt. As an
example, in the next example options for “um, I want to go to” are added prior to
the target list and “please, thank you” are added as a suffixes to the grammar. In
actual practice there could be a range of possible usage grammars that might
need to be added to the ensure reliable recognition.
An example ...
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